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 <asm/arch/hotkey.h> 14 #include <cli.h> 15 #include <common.h> 16 #include <dt_table.h> 17 #include <image-android-dt.h> 18 #include <malloc.h> 19 #include <fdt_support.h> 20 #include <fs.h> 21 #include <boot_rkimg.h> 22 #include <attestation_key.h> 23 #include <keymaster.h> 24 #include <linux/libfdt_env.h> 25 #include <optee_include/OpteeClientInterface.h> 26 #include <bidram.h> 27 #include <console.h> 28 #include <sysmem.h> 29 30 DECLARE_GLOBAL_DATA_PTR; 31 32 #define ANDROID_PARTITION_BOOT "boot" 33 #define ANDROID_PARTITION_MISC "misc" 34 #define ANDROID_PARTITION_OEM "oem" 35 #define ANDROID_PARTITION_RECOVERY "recovery" 36 #define ANDROID_PARTITION_SYSTEM "system" 37 #define ANDROID_PARTITION_VBMETA "vbmeta" 38 39 #define ANDROID_ARG_SLOT_SUFFIX "androidboot.slot_suffix=" 40 #define ANDROID_ARG_ROOT "root=" 41 #define ANDROID_ARG_SERIALNO "androidboot.serialno=" 42 #define ANDROID_VERIFY_STATE "androidboot.verifiedbootstate=" 43 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 44 #define ANDROID_ARG_FDT_FILENAME "rk-kernel.dtb" 45 #define BOOTLOADER_MESSAGE_OFFSET_IN_MISC (16 * 1024) 46 #define BOOTLOADER_MESSAGE_BLK_OFFSET (BOOTLOADER_MESSAGE_OFFSET_IN_MISC >> 9) 47 #else 48 #define ANDROID_ARG_FDT_FILENAME "kernel.dtb" 49 #endif 50 #define OEM_UNLOCK_ARG_SIZE 30 51 #define UUID_SIZE 37 52 53 #if defined(CONFIG_ANDROID_AB) && !defined(CONFIG_ANDROID_AVB) 54 static int get_partition_unique_uuid(char *partition, 55 char *guid_buf, 56 size_t guid_buf_size) 57 { 58 struct blk_desc *dev_desc; 59 disk_partition_t part_info; 60 61 dev_desc = rockchip_get_bootdev(); 62 if (!dev_desc) { 63 printf("%s: Could not find device\n", __func__); 64 return -1; 65 } 66 67 if (part_get_info_by_name(dev_desc, partition, &part_info) < 0) { 68 printf("Could not find \"%s\" partition\n", partition); 69 return -1; 70 } 71 72 if (guid_buf && guid_buf_size > 0) 73 memcpy(guid_buf, part_info.uuid, guid_buf_size); 74 75 return 0; 76 } 77 #endif 78 79 char *android_str_append(char *base_name, char *slot_suffix) 80 { 81 char *part_name; 82 size_t part_name_len; 83 84 part_name_len = strlen(base_name) + 1; 85 if (slot_suffix) 86 part_name_len += strlen(slot_suffix); 87 part_name = malloc(part_name_len); 88 if (!part_name) 89 return NULL; 90 strcpy(part_name, base_name); 91 if (slot_suffix && (slot_suffix[0] != '\0')) 92 strcat(part_name, slot_suffix); 93 94 return part_name; 95 } 96 97 int android_bootloader_message_load( 98 struct blk_desc *dev_desc, 99 const disk_partition_t *part_info, 100 struct android_bootloader_message *message) 101 { 102 ulong message_blocks = sizeof(struct android_bootloader_message) / 103 part_info->blksz; 104 if (message_blocks > part_info->size) { 105 printf("misc partition too small.\n"); 106 return -1; 107 } 108 109 #ifdef CONFIG_RKIMG_BOOTLOADER 110 if (blk_dread(dev_desc, part_info->start + BOOTLOADER_MESSAGE_BLK_OFFSET, 111 message_blocks, message) != 112 #else 113 if (blk_dread(dev_desc, part_info->start, message_blocks, message) != 114 #endif 115 message_blocks) { 116 printf("Could not read from misc partition\n"); 117 return -1; 118 } 119 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks); 120 return 0; 121 } 122 123 static int android_bootloader_message_write( 124 struct blk_desc *dev_desc, 125 const disk_partition_t *part_info, 126 struct android_bootloader_message *message) 127 { 128 #ifdef CONFIG_RKIMG_BOOTLOADER 129 ulong message_blocks = sizeof(struct android_bootloader_message) / 130 part_info->blksz + BOOTLOADER_MESSAGE_BLK_OFFSET; 131 #else 132 ulong message_blocks = sizeof(struct android_bootloader_message) / 133 part_info->blksz; 134 #endif 135 if (message_blocks > part_info->size) { 136 printf("misc partition too small.\n"); 137 return -1; 138 } 139 140 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) != 141 message_blocks) { 142 printf("Could not write to misc partition\n"); 143 return -1; 144 } 145 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks); 146 return 0; 147 } 148 149 static enum android_boot_mode android_bootloader_load_and_clear_mode( 150 struct blk_desc *dev_desc, 151 const disk_partition_t *misc_part_info) 152 { 153 struct android_bootloader_message bcb; 154 155 #ifdef CONFIG_FASTBOOT 156 char *bootloader_str; 157 158 /* Check for message from bootloader stored in RAM from a previous boot. 159 */ 160 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR; 161 if (!strcmp("reboot-bootloader", bootloader_str)) { 162 bootloader_str[0] = '\0'; 163 return ANDROID_BOOT_MODE_BOOTLOADER; 164 } 165 #endif 166 167 /* Check and update the BCB message if needed. */ 168 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) < 169 0) { 170 printf("WARNING: Unable to load the BCB.\n"); 171 return ANDROID_BOOT_MODE_NORMAL; 172 } 173 174 if (!strcmp("bootonce-bootloader", bcb.command)) { 175 /* Erase the message in the BCB since this value should be used 176 * only once. 177 */ 178 memset(bcb.command, 0, sizeof(bcb.command)); 179 android_bootloader_message_write(dev_desc, misc_part_info, 180 &bcb); 181 return ANDROID_BOOT_MODE_BOOTLOADER; 182 } 183 184 if (!strcmp("boot-recovery", bcb.command)) 185 return ANDROID_BOOT_MODE_RECOVERY; 186 187 return ANDROID_BOOT_MODE_NORMAL; 188 } 189 190 /** 191 * Return the reboot reason string for the passed boot mode. 192 * 193 * @param mode The Android Boot mode. 194 * @return a pointer to the reboot reason string for mode. 195 */ 196 static const char *android_boot_mode_str(enum android_boot_mode mode) 197 { 198 switch (mode) { 199 case ANDROID_BOOT_MODE_NORMAL: 200 return "(none)"; 201 case ANDROID_BOOT_MODE_RECOVERY: 202 return "recovery"; 203 case ANDROID_BOOT_MODE_BOOTLOADER: 204 return "bootloader"; 205 } 206 return NULL; 207 } 208 209 static int android_part_get_info_by_name_suffix(struct blk_desc *dev_desc, 210 const char *base_name, 211 const char *slot_suffix, 212 disk_partition_t *part_info) 213 { 214 char *part_name; 215 int part_num; 216 size_t part_name_len; 217 218 part_name_len = strlen(base_name) + 1; 219 if (slot_suffix) 220 part_name_len += strlen(slot_suffix); 221 part_name = malloc(part_name_len); 222 if (!part_name) 223 return -1; 224 strcpy(part_name, base_name); 225 if (slot_suffix && (slot_suffix[0] != '\0')) 226 strcat(part_name, slot_suffix); 227 228 part_num = part_get_info_by_name(dev_desc, part_name, part_info); 229 if (part_num < 0) { 230 debug("ANDROID: Could not find partition \"%s\"\n", part_name); 231 part_num = -1; 232 } 233 234 free(part_name); 235 return part_num; 236 } 237 238 static int android_bootloader_boot_bootloader(void) 239 { 240 const char *fastboot_cmd = env_get("fastbootcmd"); 241 242 if (fastboot_cmd == NULL) { 243 printf("fastboot_cmd is null, run default fastboot_cmd!\n"); 244 fastboot_cmd = "fastboot usb 0"; 245 } 246 247 return run_command(fastboot_cmd, CMD_FLAG_ENV); 248 } 249 250 #ifdef CONFIG_SUPPORT_OEM_DTB 251 static int android_bootloader_get_fdt(const char *part_name, 252 const char *load_file_name) 253 { 254 struct blk_desc *dev_desc; 255 disk_partition_t boot_part_info; 256 char *fdt_addr = NULL; 257 char slot_suffix[5] = {0}; 258 char dev_part[3] = {0}; 259 loff_t bytes = 0; 260 loff_t pos = 0; 261 loff_t len_read; 262 unsigned long addr = 0; 263 int part_num = -1; 264 int ret; 265 266 dev_desc = rockchip_get_bootdev(); 267 if (!dev_desc) { 268 printf("%s: dev_desc is NULL!\n", __func__); 269 return -1; 270 } 271 272 memset(&boot_part_info, 0, sizeof(boot_part_info)); 273 274 #ifdef CONFIG_RK_AVB_LIBAVB_USER 275 if (rk_avb_get_current_slot(slot_suffix)) { 276 printf("ANDROID: Get Current Slot error.\n"); 277 return -1; 278 } 279 280 part_num = android_part_get_info_by_name_suffix(dev_desc, 281 part_name, 282 slot_suffix, &boot_part_info); 283 #else 284 part_num = part_get_info_by_name(dev_desc, part_name, &boot_part_info); 285 if (part_num < 0) { 286 printf("ANDROID: Could not find partition \"%s\"\n", part_name); 287 return -1; 288 } 289 #endif 290 291 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num); 292 if (fs_set_blk_dev_with_part(dev_desc, part_num)) 293 return -1; 294 295 fdt_addr = env_get("fdt_addr_r"); 296 if (!fdt_addr) { 297 printf("ANDROID: No Found FDT Load Address.\n"); 298 return -1; 299 } 300 addr = simple_strtoul(fdt_addr, NULL, 16); 301 302 ret = fs_read(load_file_name, addr, pos, bytes, &len_read); 303 if (ret < 0) 304 return -1; 305 306 return 0; 307 } 308 #endif 309 310 /* 311 * Test on RK3308 AARCH64 mode (Cortex A35 816 MHZ) boot with eMMC: 312 * 313 * |-------------------------------------------------------------------| 314 * | Format | Size(Byte) | Ratio | Decomp time(ms) | Boot time(ms) | 315 * |-------------------------------------------------------------------| 316 * | Image | 7720968 | | | 488 | 317 * |-------------------------------------------------------------------| 318 * | Image.lz4 | 4119448 | 53% | 59 | 455 | 319 * |-------------------------------------------------------------------| 320 * | Image.lzo | 3858322 | 49% | 141 | 536 | 321 * |-------------------------------------------------------------------| 322 * | Image.gz | 3529108 | 45% | 222 | 609 | 323 * |-------------------------------------------------------------------| 324 * | Image.bz2 | 3295914 | 42% | 2940 | | 325 * |-------------------------------------------------------------------| 326 * | Image.lzma| 2683750 | 34% | | | 327 * |-------------------------------------------------------------------| 328 */ 329 static int sysmem_alloc_uncomp_kernel(ulong kernel_address, u32 comp) 330 { 331 struct andr_img_hdr *hdr = (struct andr_img_hdr *)kernel_address; 332 ulong ksize, kaddr; 333 334 if (comp != IH_COMP_NONE) { 335 kaddr = env_get_hex("kernel_addr_c", 0); 336 if (!kaddr) 337 kaddr = env_get_hex("kernel_addr_r", 0); 338 kaddr -= hdr->page_size; 339 if (sysmem_free((phys_addr_t)kaddr)) 340 return -EINVAL; 341 342 /* 343 * Use smaller Ratio to get larger estimated uncompress 344 * kernel size. 345 */ 346 if (comp == IH_COMP_ZIMAGE) 347 ksize = hdr->kernel_size * 100 / 45; 348 else if (comp == IH_COMP_LZ4) 349 ksize = hdr->kernel_size * 100 / 50; 350 else if (comp == IH_COMP_LZO) 351 ksize = hdr->kernel_size * 100 / 45; 352 else if (comp == IH_COMP_GZIP) 353 ksize = hdr->kernel_size * 100 / 40; 354 else if (comp == IH_COMP_BZIP2) 355 ksize = hdr->kernel_size * 100 / 40; 356 else if (comp == IH_COMP_LZMA) 357 ksize = hdr->kernel_size * 100 / 30; 358 else 359 ksize = hdr->kernel_size; 360 361 ksize = ALIGN(ksize, 512); 362 if (!sysmem_alloc_base(MEMBLK_ID_UNCOMP_KERNEL, 363 (phys_addr_t)kaddr, ksize)) 364 return -ENOMEM; 365 } 366 367 return 0; 368 } 369 370 int android_bootloader_boot_kernel(unsigned long kernel_address) 371 { 372 char *kernel_addr_r = env_get("kernel_addr_r"); 373 char *kernel_addr_c = env_get("kernel_addr_c"); 374 char *fdt_addr = env_get("fdt_addr"); 375 char kernel_addr_str[12]; 376 char comp_str[32] = {0}; 377 ulong comp_type; 378 const char *comp_name[] = { 379 [IH_COMP_NONE] = "IMAGE", 380 [IH_COMP_GZIP] = "GZIP", 381 [IH_COMP_BZIP2] = "BZIP2", 382 [IH_COMP_LZMA] = "LZMA", 383 [IH_COMP_LZO] = "LZO", 384 [IH_COMP_LZ4] = "LZ4", 385 [IH_COMP_ZIMAGE]= "ZIMAGE", 386 }; 387 char *bootm_args[] = { 388 "bootm", kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 389 390 comp_type = env_get_ulong("os_comp", 10, 0); 391 sprintf(kernel_addr_str, "0x%lx", kernel_address); 392 393 if (comp_type != IH_COMP_NONE) { 394 if (comp_type == IH_COMP_ZIMAGE && 395 kernel_addr_r && !kernel_addr_c) { 396 kernel_addr_c = kernel_addr_r; 397 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE); 398 } 399 snprintf(comp_str, 32, "%s%s%s", 400 "(Uncompress to ", kernel_addr_r, ")"); 401 } 402 403 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n", 404 comp_name[comp_type], 405 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r, 406 comp_str, fdt_addr); 407 408 hotkey_run(HK_SYSMEM); 409 410 /* 411 * Check whether there is enough space for uncompress kernel, 412 * Actually, here only gives a sysmem warning message when failed 413 * but never return -1. 414 */ 415 if (sysmem_alloc_uncomp_kernel(kernel_address, comp_type)) 416 return -1; 417 418 do_bootm(NULL, 0, 4, bootm_args); 419 420 return -1; 421 } 422 423 static char *strjoin(const char **chunks, char separator) 424 { 425 int len, joined_len = 0; 426 char *ret, *current; 427 const char **p; 428 429 for (p = chunks; *p; p++) 430 joined_len += strlen(*p) + 1; 431 432 if (!joined_len) { 433 ret = malloc(1); 434 if (ret) 435 ret[0] = '\0'; 436 return ret; 437 } 438 439 ret = malloc(joined_len); 440 current = ret; 441 if (!ret) 442 return ret; 443 444 for (p = chunks; *p; p++) { 445 len = strlen(*p); 446 memcpy(current, *p, len); 447 current += len; 448 *current = separator; 449 current++; 450 } 451 /* Replace the last separator by a \0. */ 452 current[-1] = '\0'; 453 return ret; 454 } 455 456 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 457 * @return a newly allocated string 458 */ 459 char *android_assemble_cmdline(const char *slot_suffix, 460 const char *extra_args) 461 { 462 const char *cmdline_chunks[16]; 463 const char **current_chunk = cmdline_chunks; 464 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 465 char *allocated_suffix = NULL; 466 char *allocated_serialno = NULL; 467 char *allocated_rootdev = NULL; 468 unsigned long rootdev_len; 469 470 env_cmdline = env_get("bootargs"); 471 if (env_cmdline) 472 *(current_chunk++) = env_cmdline; 473 474 /* The |slot_suffix| needs to be passed to the kernel to know what 475 * slot to boot from. 476 */ 477 if (slot_suffix) { 478 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 479 strlen(slot_suffix) + 1); 480 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 481 + strlen(slot_suffix) + 1); 482 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 483 strcat(allocated_suffix, slot_suffix); 484 *(current_chunk++) = allocated_suffix; 485 } 486 487 serialno = env_get("serial#"); 488 if (serialno) { 489 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 490 strlen(serialno) + 1); 491 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 492 strlen(serialno) + 1); 493 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 494 strcat(allocated_serialno, serialno); 495 *(current_chunk++) = allocated_serialno; 496 } 497 498 rootdev_input = env_get("android_rootdev"); 499 if (rootdev_input) { 500 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 501 allocated_rootdev = malloc(rootdev_len); 502 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 503 cli_simple_process_macros(rootdev_input, 504 allocated_rootdev + 505 strlen(ANDROID_ARG_ROOT)); 506 /* Make sure that the string is null-terminated since the 507 * previous could not copy to the end of the input string if it 508 * is too big. 509 */ 510 allocated_rootdev[rootdev_len - 1] = '\0'; 511 *(current_chunk++) = allocated_rootdev; 512 } 513 514 if (extra_args) 515 *(current_chunk++) = extra_args; 516 517 *(current_chunk++) = NULL; 518 cmdline = strjoin(cmdline_chunks, ' '); 519 free(allocated_suffix); 520 free(allocated_rootdev); 521 return cmdline; 522 } 523 524 #ifdef CONFIG_ANDROID_AVB 525 static void slot_set_unbootable(AvbABSlotData* slot) 526 { 527 slot->priority = 0; 528 slot->tries_remaining = 0; 529 slot->successful_boot = 0; 530 } 531 532 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 533 unsigned long *android_load_address, 534 char *slot_suffix) 535 { 536 const char *requested_partitions[1] = {NULL}; 537 uint8_t unlocked = true; 538 AvbOps *ops; 539 AvbSlotVerifyFlags flags; 540 AvbSlotVerifyData *slot_data[1] = {NULL}; 541 AvbSlotVerifyResult verify_result; 542 AvbABData ab_data, ab_data_orig; 543 size_t slot_index_to_boot = 0; 544 char verify_state[38] = {0}; 545 char can_boot = 1; 546 unsigned long load_address = *android_load_address; 547 struct andr_img_hdr *hdr; 548 549 requested_partitions[0] = boot_partname; 550 ops = avb_ops_user_new(); 551 if (ops == NULL) { 552 printf("avb_ops_user_new() failed!\n"); 553 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 554 } 555 556 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 557 printf("Error determining whether device is unlocked.\n"); 558 559 printf("read_is_device_unlocked() ops returned that device is %s\n", 560 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 561 562 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 563 if (unlocked & LOCK_MASK) 564 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 565 566 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 567 printf("Can not load metadata\n"); 568 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 569 } 570 571 if (!strncmp(slot_suffix, "_a", 2)) 572 slot_index_to_boot = 0; 573 else if (!strncmp(slot_suffix, "_b", 2)) 574 slot_index_to_boot = 1; 575 else 576 slot_index_to_boot = 0; 577 578 verify_result = 579 avb_slot_verify(ops, 580 requested_partitions, 581 slot_suffix, 582 flags, 583 AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, 584 &slot_data[0]); 585 586 strcat(verify_state, ANDROID_VERIFY_STATE); 587 switch (verify_result) { 588 case AVB_SLOT_VERIFY_RESULT_OK: 589 if (unlocked & LOCK_MASK) 590 strcat(verify_state, "orange"); 591 else 592 strcat(verify_state, "green"); 593 break; 594 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 595 if (unlocked & LOCK_MASK) 596 strcat(verify_state, "orange"); 597 else 598 strcat(verify_state, "yellow"); 599 break; 600 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 601 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 602 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 603 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 604 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 605 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 606 default: 607 if (unlocked & LOCK_MASK) 608 strcat(verify_state, "orange"); 609 else 610 strcat(verify_state, "red"); 611 break; 612 } 613 614 if (!slot_data[0]) { 615 can_boot = 0; 616 goto out; 617 } 618 619 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 620 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 621 (unlocked & LOCK_MASK)) { 622 int len = 0; 623 char *bootargs, *newbootargs; 624 625 if (*slot_data[0]->cmdline) { 626 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 627 len += strlen(slot_data[0]->cmdline); 628 } 629 630 bootargs = env_get("bootargs"); 631 if (bootargs) 632 len += strlen(bootargs); 633 634 newbootargs = malloc(len + 2); 635 636 if (!newbootargs) { 637 puts("Error: malloc in android_slot_verify failed!\n"); 638 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 639 } 640 *newbootargs = '\0'; 641 642 if (bootargs) { 643 strcpy(newbootargs, bootargs); 644 strcat(newbootargs, " "); 645 } 646 if (*slot_data[0]->cmdline) 647 strcat(newbootargs, slot_data[0]->cmdline); 648 env_set("bootargs", newbootargs); 649 650 /* Reserve page_size */ 651 hdr = (void *)slot_data[0]->loaded_partitions->data; 652 load_address -= hdr->page_size; 653 *android_load_address = load_address; 654 655 memcpy((uint8_t *)load_address, 656 slot_data[0]->loaded_partitions->data, 657 slot_data[0]->loaded_partitions->data_size); 658 } else { 659 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 660 } 661 662 out: 663 #ifdef CONFIG_ANDROID_AB 664 /* ... and decrement tries remaining, if applicable. */ 665 if (!ab_data.slots[slot_index_to_boot].successful_boot && 666 ab_data.slots[slot_index_to_boot].tries_remaining > 0) { 667 ab_data.slots[slot_index_to_boot].tries_remaining -= 1; 668 } 669 #endif 670 env_update("bootargs", verify_state); 671 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 672 printf("Can not save metadata\n"); 673 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 674 } 675 676 if (slot_data[0] != NULL) 677 avb_slot_verify_data_free(slot_data[0]); 678 679 if ((unlocked & LOCK_MASK) && can_boot) 680 return 0; 681 else 682 return verify_result; 683 } 684 #endif 685 686 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 687 688 /* 689 * Default return index 0. 690 */ 691 __weak int board_select_fdt_index(ulong dt_table_hdr) 692 { 693 /* 694 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 695 * over all dt entry of DT image and pick up which they want. 696 * 697 * Example: 698 * struct dt_table_entry *entry; 699 * int index; 700 * 701 * dt_for_each_entry(entry, dt_table_hdr, index) { 702 * 703 * .... (use entry) 704 * } 705 * 706 * return index; 707 */ 708 return 0; 709 } 710 711 static int android_get_dtbo(ulong *fdt_dtbo, 712 const struct andr_img_hdr *hdr, 713 int *index) 714 { 715 struct dt_table_header *dt_hdr = NULL; 716 struct blk_desc *dev_desc; 717 const char *part_name; 718 disk_partition_t part_info; 719 u32 blk_offset, blk_cnt; 720 void *buf; 721 ulong e_addr; 722 u32 e_size; 723 int e_idx; 724 int ret; 725 726 /* Get partition according to boot mode */ 727 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 728 part_name = PART_RECOVERY; 729 else 730 part_name = PART_DTBO; 731 732 /* Get partition info */ 733 dev_desc = rockchip_get_bootdev(); 734 if (!dev_desc) { 735 printf("%s: dev_desc is NULL!\n", __func__); 736 return -ENODEV; 737 } 738 739 ret = part_get_info_by_name(dev_desc, part_name, &part_info); 740 if (ret < 0) { 741 printf("%s: failed to get %s part info, ret=%d\n", 742 __func__, part_name, ret); 743 return ret; 744 } 745 746 /* Check dt table header */ 747 if (!strcmp(part_name, PART_RECOVERY)) 748 blk_offset = part_info.start + 749 (hdr->recovery_dtbo_offset / part_info.blksz); 750 else 751 blk_offset = part_info.start; 752 753 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 754 if (!dt_hdr) { 755 printf("%s: out of memory for dt header!\n", __func__); 756 return -ENOMEM; 757 } 758 759 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 760 if (ret != 1) { 761 printf("%s: failed to read dt table header\n", 762 __func__); 763 goto out1; 764 } 765 766 if (!android_dt_check_header((ulong)dt_hdr)) { 767 printf("%s: Error: invalid dt table header: 0x%x\n", 768 __func__, dt_hdr->magic); 769 ret = -EINVAL; 770 goto out1; 771 } 772 773 #ifdef DEBUG 774 android_dt_print_contents((ulong)dt_hdr); 775 #endif 776 777 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 778 part_info.blksz); 779 /* Read all DT Image */ 780 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 781 if (!buf) { 782 printf("%s: out of memory for %s part!\n", __func__, part_name); 783 ret = -ENOMEM; 784 goto out1; 785 } 786 787 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 788 if (ret != blk_cnt) { 789 printf("%s: failed to read dtbo, blk_cnt=%d, ret=%d\n", 790 __func__, blk_cnt, ret); 791 goto out2; 792 } 793 794 e_idx = board_select_fdt_index((ulong)buf); 795 if (e_idx < 0) { 796 printf("%s: failed to select board fdt index\n", __func__); 797 ret = -EINVAL; 798 goto out2; 799 } 800 801 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 802 if (!ret) { 803 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 804 ret = -EINVAL; 805 goto out2; 806 } 807 808 if (fdt_dtbo) 809 *fdt_dtbo = e_addr; 810 if (index) 811 *index = e_idx; 812 813 free(dt_hdr); 814 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 815 e_addr, e_size, e_idx, part_name); 816 817 return 0; 818 819 out2: 820 free(buf); 821 out1: 822 free(dt_hdr); 823 824 return ret; 825 } 826 827 int android_fdt_overlay_apply(void *fdt_addr) 828 { 829 struct andr_img_hdr *hdr; 830 struct blk_desc *dev_desc; 831 const char *part_name; 832 disk_partition_t part_info; 833 char buf[32] = {0}; 834 u32 blk_cnt; 835 ulong fdt_dtbo = -1; 836 int index = -1; 837 int ret; 838 839 /* Get partition according to boot mode */ 840 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 841 part_name = PART_RECOVERY; 842 else 843 part_name = PART_BOOT; 844 845 /* Get partition info */ 846 dev_desc = rockchip_get_bootdev(); 847 if (!dev_desc) { 848 printf("%s: dev_desc is NULL!\n", __func__); 849 return -ENODEV; 850 } 851 852 ret = part_get_info_by_name(dev_desc, part_name, &part_info); 853 if (ret < 0) { 854 printf("%s: failed to get %s part info, ret=%d\n", 855 __func__, part_name, ret); 856 return ret; 857 } 858 859 blk_cnt = DIV_ROUND_UP(sizeof(*hdr), part_info.blksz); 860 hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 861 if (!hdr) { 862 printf("%s: out of memory!\n", __func__); 863 return -ENOMEM; 864 } 865 866 ret = blk_dread(dev_desc, part_info.start, blk_cnt, hdr); 867 if (ret != blk_cnt) { 868 printf("%s: failed to read %s hdr!\n", __func__, part_name); 869 goto out; 870 } 871 872 #ifdef DEBUG 873 android_print_contents(hdr); 874 #endif 875 876 if (android_image_check_header(hdr)) 877 return -EINVAL; 878 879 /* Check header version */ 880 if (!hdr->header_version) { 881 printf("Android header version 0\n"); 882 ret = -EINVAL; 883 goto out; 884 } 885 886 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index); 887 if (!ret) { 888 phys_size_t fdt_size; 889 /* Must incease size before overlay */ 890 fdt_size = fdt_totalsize((void *)fdt_addr) + 891 fdt_totalsize((void *)fdt_dtbo); 892 if (sysmem_free((phys_addr_t)fdt_addr)) 893 goto out; 894 895 if (!sysmem_alloc_base(MEMBLK_ID_FDT_DTBO, 896 (phys_addr_t)fdt_addr, 897 fdt_size + CONFIG_SYS_FDT_PAD)) 898 goto out; 899 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 900 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 901 if (!ret) { 902 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 903 env_update("bootargs", buf); 904 printf("ANDROID: fdt overlay OK\n"); 905 } else { 906 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 907 } 908 } 909 910 out: 911 free(hdr); 912 913 return 0; 914 } 915 #endif 916 917 static int load_android_image(struct blk_desc *dev_desc, 918 char *boot_partname, 919 char *slot_suffix, 920 unsigned long *load_address) 921 { 922 disk_partition_t boot_part; 923 int ret, part_num; 924 925 part_num = android_part_get_info_by_name_suffix(dev_desc, 926 boot_partname, 927 slot_suffix, 928 &boot_part); 929 if (part_num < 0) { 930 printf("%s: Can't find part: %s\n", __func__, boot_partname); 931 return -1; 932 } 933 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 934 boot_part.name, part_num); 935 936 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 937 if (ret < 0) { 938 debug("%s: %s part load fail, ret=%d\n", 939 __func__, boot_part.name, ret); 940 return ret; 941 } 942 *load_address = ret; 943 944 return 0; 945 } 946 947 static bool avb_enabled; 948 void android_avb_set_enabled(bool enable) 949 { 950 avb_enabled = enable; 951 } 952 953 bool android_avb_is_enabled(void) 954 { 955 return avb_enabled; 956 } 957 958 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 959 unsigned long load_address) 960 { 961 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 962 disk_partition_t misc_part_info; 963 int part_num; 964 int ret; 965 char *command_line; 966 char slot_suffix[3] = {0}; 967 const char *mode_cmdline = NULL; 968 char *boot_partname = ANDROID_PARTITION_BOOT; 969 ulong fdt_addr; 970 971 /* 972 * 1. Load MISC partition and determine the boot mode 973 * clear its value for the next boot if needed. 974 */ 975 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 976 &misc_part_info); 977 if (part_num < 0) { 978 printf("Could not find misc partition\n"); 979 } else { 980 #ifdef CONFIG_ANDROID_KEYMASTER_CA 981 /* load attestation key from misc partition. */ 982 load_attestation_key(dev_desc, &misc_part_info); 983 #endif 984 985 mode = android_bootloader_load_and_clear_mode(dev_desc, 986 &misc_part_info); 987 #ifdef CONFIG_RKIMG_BOOTLOADER 988 if (mode == ANDROID_BOOT_MODE_NORMAL) { 989 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 990 mode = ANDROID_BOOT_MODE_RECOVERY; 991 } 992 #endif 993 } 994 995 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 996 997 #ifdef CONFIG_ANDROID_AB 998 /*TODO: get from pre-loader or misc partition*/ 999 if (rk_avb_get_current_slot(slot_suffix)) 1000 return -1; 1001 1002 AvbOps *ops; 1003 AvbABData ab_data; 1004 AvbABData ab_data_orig; 1005 size_t slot_index_to_boot = 0; 1006 1007 if (!strncmp(slot_suffix, "_a", 2)) 1008 slot_index_to_boot = 0; 1009 else if (!strncmp(slot_suffix, "_b", 2)) 1010 slot_index_to_boot = 1; 1011 else 1012 slot_index_to_boot = 0; 1013 ops = avb_ops_user_new(); 1014 if (ops == NULL) { 1015 printf("avb_ops_user_new() failed!\n"); 1016 return -1; 1017 } 1018 1019 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 1020 printf("Can not load metadata\n"); 1021 return -1; 1022 } 1023 1024 /* ... and decrement tries remaining, if applicable. */ 1025 if (!ab_data.slots[slot_index_to_boot].successful_boot && 1026 ab_data.slots[slot_index_to_boot].tries_remaining > 0) { 1027 ab_data.slots[slot_index_to_boot].tries_remaining -= 1; 1028 } 1029 1030 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 1031 printf("Can not save metadata\n"); 1032 return -1; 1033 } 1034 1035 if (slot_suffix[0] != '_') { 1036 printf("###There is no bootable slot, bring up lastboot!###\n"); 1037 if (rk_get_lastboot() == 1) 1038 memcpy(slot_suffix, "_b", 2); 1039 else if(rk_get_lastboot() == 0) 1040 memcpy(slot_suffix, "_a", 2); 1041 else 1042 return -1; 1043 } 1044 #endif 1045 1046 switch (mode) { 1047 case ANDROID_BOOT_MODE_NORMAL: 1048 /* In normal mode, we load the kernel from "boot" but append 1049 * "skip_initramfs" to the cmdline to make it ignore the 1050 * recovery initramfs in the boot partition. 1051 */ 1052 #if (defined(CONFIG_ANDROID_AB) && !defined(CONFIG_ANDROID_AVB)) 1053 { 1054 char root_partition[20] = {0}; 1055 char guid_buf[UUID_SIZE] = {0}; 1056 char root_partuuid[70] = "root=PARTUUID="; 1057 1058 strcat(root_partition, ANDROID_PARTITION_SYSTEM); 1059 strcat(root_partition, slot_suffix); 1060 get_partition_unique_uuid(root_partition, guid_buf, UUID_SIZE); 1061 strcat(root_partuuid, guid_buf); 1062 env_update("bootargs", root_partuuid); 1063 } 1064 #endif 1065 1066 #ifdef CONFIG_ANDROID_AB 1067 mode_cmdline = "skip_initramfs"; 1068 #endif 1069 break; 1070 case ANDROID_BOOT_MODE_RECOVERY: 1071 /* In recovery mode we still boot the kernel from "boot" but 1072 * don't skip the initramfs so it boots to recovery. 1073 */ 1074 #ifndef CONFIG_ANDROID_AB 1075 boot_partname = ANDROID_PARTITION_RECOVERY; 1076 #endif 1077 break; 1078 case ANDROID_BOOT_MODE_BOOTLOADER: 1079 /* Bootloader mode enters fastboot. If this operation fails we 1080 * simply return since we can't recover from this situation by 1081 * switching to another slot. 1082 */ 1083 return android_bootloader_boot_bootloader(); 1084 } 1085 1086 #ifdef CONFIG_ANDROID_AVB 1087 uint8_t vboot_flag = 0; 1088 char vbmeta_partition[9] = {0}; 1089 disk_partition_t vbmeta_part_info; 1090 1091 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) 1092 return -1; 1093 1094 if (vboot_flag) { 1095 printf("SecureBoot enabled, AVB verify\n"); 1096 android_avb_set_enabled(true); 1097 if (android_slot_verify(boot_partname, &load_address, 1098 slot_suffix)) 1099 return -1; 1100 } else { 1101 strcat(vbmeta_partition, ANDROID_PARTITION_VBMETA); 1102 strcat(vbmeta_partition, slot_suffix); 1103 part_num = part_get_info_by_name(dev_desc, vbmeta_partition, 1104 &vbmeta_part_info); 1105 if (part_num < 0) { 1106 printf("SecureBoot disabled, AVB skip\n"); 1107 env_update("bootargs", 1108 "androidboot.verifiedbootstate=orange"); 1109 android_avb_set_enabled(false); 1110 if (load_android_image(dev_desc, boot_partname, 1111 slot_suffix, &load_address)) 1112 return -1; 1113 } else { 1114 printf("SecureBoot enabled, AVB verify\n"); 1115 android_avb_set_enabled(true); 1116 if (android_slot_verify(boot_partname, &load_address, 1117 slot_suffix)) 1118 return -1; 1119 } 1120 } 1121 #else 1122 /* 1123 * 2. Load the boot/recovery from the desired "boot" partition. 1124 * Determine if this is an AOSP image. 1125 */ 1126 if (load_android_image(dev_desc, boot_partname, 1127 slot_suffix, &load_address)) 1128 return -1; 1129 #endif 1130 1131 /* Set Android root variables. */ 1132 env_set_ulong("android_root_devnum", dev_desc->devnum); 1133 env_set("android_slotsufix", slot_suffix); 1134 1135 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1136 /* read oem unlock status and attach to bootargs */ 1137 uint8_t unlock = 0; 1138 TEEC_Result result; 1139 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1140 result = trusty_read_oem_unlock(&unlock); 1141 if (result) { 1142 printf("read oem unlock status with error : 0x%x\n", result); 1143 } else { 1144 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1145 env_update("bootargs", oem_unlock); 1146 } 1147 #endif 1148 1149 /* Assemble the command line */ 1150 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1151 env_update("bootargs", command_line); 1152 1153 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1154 1155 #ifdef CONFIG_SUPPORT_OEM_DTB 1156 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1157 ANDROID_ARG_FDT_FILENAME)) { 1158 printf("Can not get the fdt data from oem!\n"); 1159 } 1160 #else 1161 ret = android_image_get_fdt((void *)load_address, &fdt_addr); 1162 if (!ret) 1163 env_set_hex("fdt_addr", fdt_addr); 1164 #endif 1165 android_bootloader_boot_kernel(load_address); 1166 1167 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1168 return -1; 1169 } 1170 1171 int android_avb_boot_flow(char *slot_suffix, unsigned long kernel_address) 1172 { 1173 struct blk_desc *dev_desc; 1174 disk_partition_t boot_part_info; 1175 int ret; 1176 dev_desc = rockchip_get_bootdev(); 1177 if (!dev_desc) { 1178 printf("%s: dev_desc is NULL!\n", __func__); 1179 return -1; 1180 } 1181 /* Load the kernel from the desired "boot" partition. */ 1182 android_part_get_info_by_name_suffix(dev_desc, 1183 ANDROID_PARTITION_BOOT, 1184 slot_suffix, &boot_part_info); 1185 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1186 -1UL); 1187 if (ret < 0) 1188 return ret; 1189 android_bootloader_boot_kernel(kernel_address); 1190 1191 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1192 return -1; 1193 } 1194 1195 int android_boot_flow(unsigned long kernel_address) 1196 { 1197 struct blk_desc *dev_desc; 1198 disk_partition_t boot_part_info; 1199 int ret; 1200 dev_desc = rockchip_get_bootdev(); 1201 if (!dev_desc) { 1202 printf("%s: dev_desc is NULL!\n", __func__); 1203 return -1; 1204 } 1205 /* Load the kernel from the desired "boot" partition. */ 1206 part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, &boot_part_info); 1207 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1208 -1UL); 1209 if (ret < 0) 1210 return ret; 1211 android_bootloader_boot_kernel(kernel_address); 1212 1213 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1214 return -1; 1215 } 1216