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; 262 263 /* 264 * Use smaller Ratio to get larger estimated uncompress 265 * kernel size. 266 */ 267 if (comp == IH_COMP_ZIMAGE) 268 ksize = hdr->kernel_size * 100 / 45; 269 else if (comp == IH_COMP_LZ4) 270 ksize = hdr->kernel_size * 100 / 50; 271 else if (comp == IH_COMP_LZO) 272 ksize = hdr->kernel_size * 100 / 45; 273 else if (comp == IH_COMP_GZIP) 274 ksize = hdr->kernel_size * 100 / 40; 275 else if (comp == IH_COMP_BZIP2) 276 ksize = hdr->kernel_size * 100 / 40; 277 else if (comp == IH_COMP_LZMA) 278 ksize = hdr->kernel_size * 100 / 30; 279 else 280 ksize = hdr->kernel_size; 281 282 kaddr = uncomp_kaddr; 283 ksize = ALIGN(ksize, 512); 284 if (!sysmem_alloc_base(MEM_UNCOMP_KERNEL, 285 (phys_addr_t)kaddr, ksize)) 286 return -ENOMEM; 287 } 288 289 return 0; 290 } 291 292 int android_bootloader_boot_kernel(unsigned long kernel_address) 293 { 294 char *kernel_addr_r = env_get("kernel_addr_r"); 295 char *kernel_addr_c = env_get("kernel_addr_c"); 296 char *fdt_addr = env_get("fdt_addr_r"); 297 char kernel_addr_str[12]; 298 char comp_str[32] = {0}; 299 ulong comp_type; 300 const char *comp_name[] = { 301 [IH_COMP_NONE] = "IMAGE", 302 [IH_COMP_GZIP] = "GZIP", 303 [IH_COMP_BZIP2] = "BZIP2", 304 [IH_COMP_LZMA] = "LZMA", 305 [IH_COMP_LZO] = "LZO", 306 [IH_COMP_LZ4] = "LZ4", 307 [IH_COMP_ZIMAGE]= "ZIMAGE", 308 }; 309 char *bootm_args[] = { 310 kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 311 312 comp_type = env_get_ulong("os_comp", 10, 0); 313 sprintf(kernel_addr_str, "0x%08lx", kernel_address); 314 315 if (comp_type != IH_COMP_NONE) { 316 if (comp_type == IH_COMP_ZIMAGE && 317 kernel_addr_r && !kernel_addr_c) { 318 kernel_addr_c = kernel_addr_r; 319 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE); 320 } 321 snprintf(comp_str, 32, "%s%s%s", 322 "(Uncompress to ", kernel_addr_r, ")"); 323 } 324 325 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n", 326 comp_name[comp_type], 327 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r, 328 comp_str, fdt_addr); 329 330 hotkey_run(HK_SYSMEM); 331 332 /* 333 * Check whether there is enough space for uncompress kernel, 334 * Actually, here only gives a sysmem warning message when failed 335 * but never return -1. 336 */ 337 if (sysmem_alloc_uncomp_kernel(kernel_address, 338 simple_strtoul(kernel_addr_r, NULL, 16), 339 comp_type)) 340 return -1; 341 342 return do_bootm_states(NULL, 0, ARRAY_SIZE(bootm_args), bootm_args, 343 BOOTM_STATE_START | 344 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER | 345 BOOTM_STATE_LOADOS | 346 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 347 BOOTM_STATE_RAMDISK | 348 #endif 349 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 350 BOOTM_STATE_OS_GO, &images, 1); 351 } 352 353 static char *strjoin(const char **chunks, char separator) 354 { 355 int len, joined_len = 0; 356 char *ret, *current; 357 const char **p; 358 359 for (p = chunks; *p; p++) 360 joined_len += strlen(*p) + 1; 361 362 if (!joined_len) { 363 ret = malloc(1); 364 if (ret) 365 ret[0] = '\0'; 366 return ret; 367 } 368 369 ret = malloc(joined_len); 370 current = ret; 371 if (!ret) 372 return ret; 373 374 for (p = chunks; *p; p++) { 375 len = strlen(*p); 376 memcpy(current, *p, len); 377 current += len; 378 *current = separator; 379 current++; 380 } 381 /* Replace the last separator by a \0. */ 382 current[-1] = '\0'; 383 return ret; 384 } 385 386 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 387 * @return a newly allocated string 388 */ 389 char *android_assemble_cmdline(const char *slot_suffix, 390 const char *extra_args) 391 { 392 const char *cmdline_chunks[16]; 393 const char **current_chunk = cmdline_chunks; 394 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 395 char *allocated_suffix = NULL; 396 char *allocated_serialno = NULL; 397 char *allocated_rootdev = NULL; 398 unsigned long rootdev_len; 399 400 env_cmdline = env_get("bootargs"); 401 if (env_cmdline) 402 *(current_chunk++) = env_cmdline; 403 404 /* The |slot_suffix| needs to be passed to the kernel to know what 405 * slot to boot from. 406 */ 407 if (slot_suffix) { 408 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 409 strlen(slot_suffix) + 1); 410 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 411 + strlen(slot_suffix) + 1); 412 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 413 strcat(allocated_suffix, slot_suffix); 414 *(current_chunk++) = allocated_suffix; 415 } 416 417 serialno = env_get("serial#"); 418 if (serialno) { 419 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 420 strlen(serialno) + 1); 421 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 422 strlen(serialno) + 1); 423 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 424 strcat(allocated_serialno, serialno); 425 *(current_chunk++) = allocated_serialno; 426 } 427 428 rootdev_input = env_get("android_rootdev"); 429 if (rootdev_input) { 430 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 431 allocated_rootdev = malloc(rootdev_len); 432 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 433 cli_simple_process_macros(rootdev_input, 434 allocated_rootdev + 435 strlen(ANDROID_ARG_ROOT)); 436 /* Make sure that the string is null-terminated since the 437 * previous could not copy to the end of the input string if it 438 * is too big. 439 */ 440 allocated_rootdev[rootdev_len - 1] = '\0'; 441 *(current_chunk++) = allocated_rootdev; 442 } 443 444 if (extra_args) 445 *(current_chunk++) = extra_args; 446 447 *(current_chunk++) = NULL; 448 cmdline = strjoin(cmdline_chunks, ' '); 449 free(allocated_suffix); 450 free(allocated_rootdev); 451 return cmdline; 452 } 453 454 #ifdef CONFIG_ANDROID_AVB 455 static void slot_set_unbootable(AvbABSlotData* slot) 456 { 457 slot->priority = 0; 458 slot->tries_remaining = 0; 459 slot->successful_boot = 0; 460 } 461 462 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 463 unsigned long *android_load_address, 464 char *slot_suffix) 465 { 466 const char *requested_partitions[1] = {NULL}; 467 uint8_t unlocked = true; 468 AvbOps *ops; 469 AvbSlotVerifyFlags flags; 470 AvbSlotVerifyData *slot_data[1] = {NULL}; 471 AvbSlotVerifyResult verify_result; 472 AvbABData ab_data, ab_data_orig; 473 size_t slot_index_to_boot = 0; 474 char verify_state[38] = {0}; 475 char can_boot = 1; 476 char retry_no_vbmeta_partition = 1; 477 unsigned long load_address = *android_load_address; 478 struct andr_img_hdr *hdr; 479 480 requested_partitions[0] = boot_partname; 481 ops = avb_ops_user_new(); 482 if (ops == NULL) { 483 printf("avb_ops_user_new() failed!\n"); 484 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 485 } 486 487 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 488 printf("Error determining whether device is unlocked.\n"); 489 490 printf("read_is_device_unlocked() ops returned that device is %s\n", 491 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 492 493 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 494 if (unlocked & LOCK_MASK) 495 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 496 497 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 498 printf("Can not load metadata\n"); 499 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 500 } 501 502 if (!strncmp(slot_suffix, "_a", 2)) 503 slot_index_to_boot = 0; 504 else if (!strncmp(slot_suffix, "_b", 2)) 505 slot_index_to_boot = 1; 506 else 507 slot_index_to_boot = 0; 508 509 if (strcmp(boot_partname, "recovery") == 0) 510 flags |= AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 511 512 retry_verify: 513 verify_result = 514 avb_slot_verify(ops, 515 requested_partitions, 516 slot_suffix, 517 flags, 518 AVB_HASHTREE_ERROR_MODE_RESTART, 519 &slot_data[0]); 520 521 strcat(verify_state, ANDROID_VERIFY_STATE); 522 switch (verify_result) { 523 case AVB_SLOT_VERIFY_RESULT_OK: 524 if (unlocked & LOCK_MASK) 525 strcat(verify_state, "orange"); 526 else 527 strcat(verify_state, "green"); 528 break; 529 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 530 if (unlocked & LOCK_MASK) 531 strcat(verify_state, "orange"); 532 else 533 strcat(verify_state, "yellow"); 534 break; 535 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 536 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 537 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 538 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 539 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 540 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 541 default: 542 if (unlocked & LOCK_MASK) 543 strcat(verify_state, "orange"); 544 else 545 strcat(verify_state, "red"); 546 break; 547 } 548 549 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK && 550 verify_result != AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED) { 551 if (retry_no_vbmeta_partition && strcmp(boot_partname, "recovery") == 0) { 552 printf("Verify recovery with vbmeta.\n"); 553 flags &= ~AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 554 retry_no_vbmeta_partition = 0; 555 goto retry_verify; 556 } 557 } 558 559 if (!slot_data[0]) { 560 can_boot = 0; 561 goto out; 562 } 563 564 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 565 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 566 (unlocked & LOCK_MASK)) { 567 int len = 0; 568 char *bootargs, *newbootargs; 569 570 if (*slot_data[0]->cmdline) { 571 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 572 len += strlen(slot_data[0]->cmdline); 573 } 574 575 bootargs = env_get("bootargs"); 576 if (bootargs) 577 len += strlen(bootargs); 578 579 newbootargs = malloc(len + 2); 580 581 if (!newbootargs) { 582 puts("Error: malloc in android_slot_verify failed!\n"); 583 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 584 } 585 *newbootargs = '\0'; 586 587 if (bootargs) { 588 strcpy(newbootargs, bootargs); 589 strcat(newbootargs, " "); 590 } 591 if (*slot_data[0]->cmdline) 592 strcat(newbootargs, slot_data[0]->cmdline); 593 env_set("bootargs", newbootargs); 594 595 hdr = (void *)slot_data[0]->loaded_partitions->data; 596 597 /* 598 * populate boot_img_hdr_v3 599 * 600 * If allow verification error: the image is loaded by 601 * ops->get_preloaded_partition() which auto populates 602 * boot_img_hdr_v3. 603 * 604 * If not allow verification error: the image is full loaded 605 * by ops->read_from_partition() which doesn't populate 606 * boot_img_hdr_v3, we need to fix it here. 607 */ 608 if (hdr->header_version >= 3 && 609 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) { 610 struct andr_img_hdr *v3hdr; 611 struct blk_desc *dev_desc; 612 disk_partition_t part; 613 614 dev_desc = rockchip_get_bootdev(); 615 if (!dev_desc) 616 return -1; 617 618 if (part_get_info_by_name(dev_desc, 619 boot_partname, &part) < 0) 620 return -1; 621 622 v3hdr = populate_andr_img_hdr(dev_desc, &part); 623 if (v3hdr) { 624 memcpy(hdr, v3hdr, sizeof(*v3hdr)); 625 free(v3hdr); 626 } 627 } 628 629 /* Reserve page_size */ 630 load_address -= hdr->page_size; 631 if (android_image_memcpy_separate(hdr, &load_address)) { 632 printf("Failed to separate copy android image\n"); 633 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 634 } 635 *android_load_address = load_address; 636 } else { 637 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 638 } 639 640 out: 641 env_update("bootargs", verify_state); 642 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 643 printf("Can not save metadata\n"); 644 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 645 } 646 647 if (slot_data[0] != NULL) 648 avb_slot_verify_data_free(slot_data[0]); 649 650 if ((unlocked & LOCK_MASK) && can_boot) 651 return 0; 652 else 653 return verify_result; 654 } 655 #endif 656 657 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 658 659 /* 660 * Default return index 0. 661 */ 662 __weak int board_select_fdt_index(ulong dt_table_hdr) 663 { 664 /* 665 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 666 * over all dt entry of DT image and pick up which they want. 667 * 668 * Example: 669 * struct dt_table_entry *entry; 670 * int index; 671 * 672 * dt_for_each_entry(entry, dt_table_hdr, index) { 673 * 674 * .... (use entry) 675 * } 676 * 677 * return index; 678 */ 679 return 0; 680 } 681 682 static int android_get_dtbo(ulong *fdt_dtbo, 683 const struct andr_img_hdr *hdr, 684 int *index, const char *part_dtbo) 685 { 686 struct dt_table_header *dt_hdr = NULL; 687 struct blk_desc *dev_desc; 688 disk_partition_t part_info; 689 u32 blk_offset, blk_cnt; 690 void *buf; 691 ulong e_addr; 692 u32 e_size; 693 int e_idx; 694 int ret; 695 696 /* Get partition info */ 697 dev_desc = rockchip_get_bootdev(); 698 if (!dev_desc) 699 return -ENODEV; 700 701 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info); 702 if (ret < 0) { 703 printf("No %s partition, ret=%d\n", part_dtbo, ret); 704 return ret; 705 } 706 707 /* Check dt table header */ 708 if (!strcmp(part_dtbo, PART_RECOVERY)) 709 blk_offset = part_info.start + 710 (hdr->recovery_dtbo_offset / part_info.blksz); 711 else 712 blk_offset = part_info.start; 713 714 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 715 if (!dt_hdr) 716 return -ENOMEM; 717 718 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 719 if (ret != 1) 720 goto out1; 721 722 if (!android_dt_check_header((ulong)dt_hdr)) { 723 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic); 724 ret = -EINVAL; 725 goto out1; 726 } 727 728 #ifdef DEBUG 729 android_dt_print_contents((ulong)dt_hdr); 730 #endif 731 732 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 733 part_info.blksz); 734 /* Read all DT Image */ 735 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 736 if (!buf) { 737 ret = -ENOMEM; 738 goto out1; 739 } 740 741 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 742 if (ret != blk_cnt) 743 goto out2; 744 745 e_idx = board_select_fdt_index((ulong)buf); 746 if (e_idx < 0) { 747 printf("%s: failed to select board fdt index\n", __func__); 748 ret = -EINVAL; 749 goto out2; 750 } 751 752 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 753 if (!ret) { 754 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 755 ret = -EINVAL; 756 goto out2; 757 } 758 759 if (fdt_dtbo) 760 *fdt_dtbo = e_addr; 761 if (index) 762 *index = e_idx; 763 764 free(dt_hdr); 765 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 766 e_addr, e_size, e_idx, part_dtbo); 767 768 return 0; 769 770 out2: 771 free(buf); 772 out1: 773 free(dt_hdr); 774 775 return ret; 776 } 777 778 int android_fdt_overlay_apply(void *fdt_addr) 779 { 780 struct andr_img_hdr *hdr; 781 struct blk_desc *dev_desc; 782 const char *part_boot = PART_BOOT; 783 disk_partition_t part_info; 784 char *fdt_backup; 785 char *part_dtbo = PART_DTBO; 786 char buf[32] = {0}; 787 ulong fdt_dtbo = -1; 788 u32 totalsize; 789 int index = -1; 790 int ret; 791 792 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) { 793 #ifdef CONFIG_ANDROID_AB 794 bool can_find_recovery; 795 796 can_find_recovery = ab_can_find_recovery_part(); 797 part_boot = can_find_recovery ? PART_RECOVERY : PART_BOOT; 798 part_dtbo = can_find_recovery ? PART_RECOVERY : PART_DTBO; 799 #else 800 part_boot = PART_RECOVERY; 801 part_dtbo = PART_RECOVERY; 802 #endif 803 } 804 805 dev_desc = rockchip_get_bootdev(); 806 if (!dev_desc) 807 return -ENODEV; 808 809 ret = part_get_info_by_name(dev_desc, part_boot, &part_info); 810 if (ret < 0) 811 return ret; 812 813 hdr = populate_andr_img_hdr(dev_desc, &part_info); 814 if (!hdr) 815 return -EINVAL; 816 #ifdef DEBUG 817 android_print_contents(hdr); 818 #endif 819 820 /* 821 * recovery_dtbo fields 822 * 823 * boot_img_hdr_v0: unsupported 824 * boot_img_hdr_v1,2: supported 825 * boot_img_hdr_v3 + boot.img: supported 826 * boot_img_hdr_v3 + recovery.img: unsupported 827 */ 828 if ((hdr->header_version == 0) || 829 (hdr->header_version == 3 && !strcmp(part_boot, PART_RECOVERY)) || 830 (hdr->header_version > 3)) 831 goto out; 832 833 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index, part_dtbo); 834 if (!ret) { 835 phys_size_t fdt_size; 836 837 /* Must incease size before overlay */ 838 fdt_size = fdt_totalsize((void *)fdt_addr) + 839 fdt_totalsize((void *)fdt_dtbo); 840 if (sysmem_free((phys_addr_t)fdt_addr)) 841 goto out; 842 843 if (!sysmem_alloc_base(MEM_FDT_DTBO, 844 (phys_addr_t)fdt_addr, 845 fdt_size + CONFIG_SYS_FDT_PAD)) 846 goto out; 847 /* 848 * Backup main fdt in case of being destroyed by 849 * fdt_overlay_apply() when it overlys failed. 850 */ 851 totalsize = fdt_totalsize(fdt_addr); 852 fdt_backup = malloc(totalsize); 853 if (!fdt_backup) 854 goto out; 855 856 memcpy(fdt_backup, fdt_addr, totalsize); 857 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 858 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 859 if (!ret) { 860 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 861 env_update("bootargs", buf); 862 printf("ANDROID: fdt overlay OK\n"); 863 } else { 864 memcpy(fdt_addr, fdt_backup, totalsize); 865 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 866 } 867 868 free(fdt_backup); 869 } 870 871 out: 872 free(hdr); 873 874 return 0; 875 } 876 #endif 877 878 int android_image_load_by_partname(struct blk_desc *dev_desc, 879 const char *boot_partname, 880 unsigned long *load_address) 881 { 882 disk_partition_t boot_part; 883 int ret, part_num; 884 885 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part); 886 if (part_num < 0) { 887 printf("%s: Can't find part: %s\n", __func__, boot_partname); 888 return -1; 889 } 890 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 891 boot_part.name, part_num); 892 893 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 894 if (ret < 0) { 895 debug("%s: %s part load fail, ret=%d\n", 896 __func__, boot_part.name, ret); 897 return ret; 898 } 899 *load_address = ret; 900 901 return 0; 902 } 903 904 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 905 unsigned long load_address) 906 { 907 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 908 disk_partition_t misc_part_info; 909 int part_num; 910 char *command_line; 911 char slot_suffix[3] = {0}; 912 const char *mode_cmdline = NULL; 913 char *boot_partname = ANDROID_PARTITION_BOOT; 914 915 /* 916 * 1. Load MISC partition and determine the boot mode 917 * clear its value for the next boot if needed. 918 */ 919 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 920 &misc_part_info); 921 if (part_num < 0) { 922 printf("Could not find misc partition\n"); 923 } else { 924 #ifdef CONFIG_ANDROID_KEYMASTER_CA 925 /* load attestation key from misc partition. */ 926 load_attestation_key(dev_desc, &misc_part_info); 927 #endif 928 929 mode = android_bootloader_load_and_clear_mode(dev_desc, 930 &misc_part_info); 931 #ifdef CONFIG_RKIMG_BOOTLOADER 932 if (mode == ANDROID_BOOT_MODE_NORMAL) { 933 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 934 mode = ANDROID_BOOT_MODE_RECOVERY; 935 } 936 #endif 937 } 938 939 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 940 #ifdef CONFIG_ANDROID_AB 941 /* Get current slot_suffix */ 942 if (ab_get_slot_suffix(slot_suffix)) 943 return -1; 944 #endif 945 switch (mode) { 946 case ANDROID_BOOT_MODE_NORMAL: 947 /* In normal mode, we load the kernel from "boot" but append 948 * "skip_initramfs" to the cmdline to make it ignore the 949 * recovery initramfs in the boot partition. 950 */ 951 #ifdef CONFIG_ANDROID_AB 952 /* In A/B, the recovery image is built as boot.img, containing the 953 * recovery's ramdisk. Previously, bootloader used the skip_initramfs 954 * kernel command line parameter to decide which mode to boot into. 955 * For Android >=10 and with dynamic partition support, the bootloader 956 * MUST NOT pass skip_initramfs to the kernel command-line. 957 * Instead, bootloader should pass androidboot.force_normal_boot=1 958 * and then Android's first-stage init in ramdisk 959 * will skip recovery and boot normal Android. 960 */ 961 if (ab_is_support_dynamic_partition(dev_desc)) { 962 mode_cmdline = "androidboot.force_normal_boot=1"; 963 } else { 964 mode_cmdline = "skip_initramfs"; 965 } 966 #endif 967 break; 968 case ANDROID_BOOT_MODE_RECOVERY: 969 /* 970 * In recovery mode, if have recovery partition, we still boot the 971 * kernel from "recovery". If not, don't skip the initramfs so it 972 * boots to recovery from image in partition "boot". 973 */ 974 #ifdef CONFIG_ANDROID_AB 975 boot_partname = ab_can_find_recovery_part() ? 976 ANDROID_PARTITION_RECOVERY : ANDROID_PARTITION_BOOT; 977 #else 978 boot_partname = ANDROID_PARTITION_RECOVERY; 979 #endif 980 break; 981 case ANDROID_BOOT_MODE_BOOTLOADER: 982 /* Bootloader mode enters fastboot. If this operation fails we 983 * simply return since we can't recover from this situation by 984 * switching to another slot. 985 */ 986 return android_bootloader_boot_bootloader(); 987 } 988 989 #ifdef CONFIG_ANDROID_AVB 990 uint8_t vboot_flag = 0; 991 disk_partition_t vbmeta_part_info; 992 993 #ifdef CONFIG_OPTEE_CLIENT 994 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) { 995 printf("Can't read vboot flag\n"); 996 return -1; 997 } 998 #endif 999 if (vboot_flag) { 1000 printf("Vboot=1, SecureBoot enabled, AVB verify\n"); 1001 if (android_slot_verify(boot_partname, &load_address, 1002 slot_suffix)) { 1003 printf("AVB verify failed\n"); 1004 1005 return -1; 1006 } 1007 } else { 1008 part_num = part_get_info_by_name(dev_desc, 1009 ANDROID_PARTITION_VBMETA, 1010 &vbmeta_part_info); 1011 if (part_num < 0) { 1012 printf("Not AVB images, AVB skip\n"); 1013 env_update("bootargs", 1014 "androidboot.verifiedbootstate=orange"); 1015 if (android_image_load_by_partname(dev_desc, 1016 boot_partname, 1017 &load_address)) { 1018 printf("Android image load failed\n"); 1019 return -1; 1020 } 1021 } else { 1022 printf("Vboot=0, AVB images, AVB verify\n"); 1023 if (android_slot_verify(boot_partname, &load_address, 1024 slot_suffix)) { 1025 printf("AVB verify failed\n"); 1026 1027 return -1; 1028 } 1029 } 1030 } 1031 #else 1032 /* 1033 * 2. Load the boot/recovery from the desired "boot" partition. 1034 * Determine if this is an AOSP image. 1035 */ 1036 if (android_image_load_by_partname(dev_desc, 1037 boot_partname, 1038 &load_address)) { 1039 printf("Android image load failed\n"); 1040 return -1; 1041 } 1042 #endif 1043 1044 #ifdef CONFIG_ANDROID_AB 1045 ab_update_root_uuid(); 1046 #endif 1047 1048 /* Set Android root variables. */ 1049 env_set_ulong("android_root_devnum", dev_desc->devnum); 1050 env_set("android_slotsufix", slot_suffix); 1051 1052 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1053 /* read oem unlock status and attach to bootargs */ 1054 uint8_t unlock = 0; 1055 TEEC_Result result; 1056 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1057 result = trusty_read_oem_unlock(&unlock); 1058 if (result) { 1059 printf("read oem unlock status with error : 0x%x\n", result); 1060 } else { 1061 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1062 env_update("bootargs", oem_unlock); 1063 } 1064 #endif 1065 1066 /* Assemble the command line */ 1067 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1068 env_update("bootargs", command_line); 1069 1070 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1071 1072 #ifdef CONFIG_SUPPORT_OEM_DTB 1073 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1074 ANDROID_ARG_FDT_FILENAME)) { 1075 printf("Can not get the fdt data from oem!\n"); 1076 } 1077 #endif 1078 #ifdef CONFIG_OPTEE_CLIENT 1079 if (trusty_notify_optee_uboot_end()) 1080 printf("Close optee client failed!\n"); 1081 #endif 1082 1083 android_bootloader_boot_kernel(load_address); 1084 1085 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1086 return -1; 1087 } 1088 1089 int android_avb_boot_flow(unsigned long kernel_address) 1090 { 1091 struct blk_desc *dev_desc; 1092 disk_partition_t boot_part_info; 1093 int ret; 1094 1095 dev_desc = rockchip_get_bootdev(); 1096 if (!dev_desc) { 1097 printf("%s: dev_desc is NULL!\n", __func__); 1098 return -1; 1099 } 1100 1101 /* Load the kernel from the desired "boot" partition. */ 1102 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1103 &boot_part_info); 1104 if (ret < 0) { 1105 printf("%s: failed to get boot part\n", __func__); 1106 return ret; 1107 } 1108 1109 ret = android_image_load(dev_desc, &boot_part_info, 1110 kernel_address, -1UL); 1111 if (ret < 0) { 1112 printf("Android avb boot failed, error %d.\n", ret); 1113 return ret; 1114 } 1115 1116 android_bootloader_boot_kernel(kernel_address); 1117 1118 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1119 return -1; 1120 } 1121 1122 int android_boot_flow(unsigned long kernel_address) 1123 { 1124 struct blk_desc *dev_desc; 1125 disk_partition_t boot_part_info; 1126 int ret; 1127 1128 dev_desc = rockchip_get_bootdev(); 1129 if (!dev_desc) { 1130 printf("%s: dev_desc is NULL!\n", __func__); 1131 return -1; 1132 } 1133 /* Load the kernel from the desired "boot" partition. */ 1134 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1135 &boot_part_info); 1136 if (ret < 0) { 1137 printf("%s: failed to get boot part\n", __func__); 1138 return ret; 1139 } 1140 1141 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1142 -1UL); 1143 if (ret < 0) 1144 return ret; 1145 1146 android_bootloader_boot_kernel(kernel_address); 1147 1148 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1149 return -1; 1150 } 1151