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 #if defined(CONFIG_ANDROID_AB) && defined(CONFIG_ANDROID_AVB) 35 static void reset_cpu_if_android_ab(void) 36 { 37 printf("Reset in AB system.\n"); 38 flushc(); 39 /* 40 * Since we use the retry-count in ab system, then can 41 * try reboot if verify fail until the retry-count is 42 * equal to zero. 43 */ 44 reset_cpu(0); 45 } 46 #else 47 static inline void reset_cpu_if_android_ab(void) {} 48 #endif 49 50 int android_bootloader_message_load( 51 struct blk_desc *dev_desc, 52 const disk_partition_t *part_info, 53 struct android_bootloader_message *message) 54 { 55 ulong message_blocks = sizeof(struct android_bootloader_message) / 56 part_info->blksz; 57 if (message_blocks > part_info->size) { 58 printf("misc partition too small.\n"); 59 return -1; 60 } 61 62 if (blk_dread(dev_desc, part_info->start + android_bcb_msg_sector_offset(), 63 message_blocks, message) != 64 message_blocks) { 65 printf("Could not read from misc partition\n"); 66 return -1; 67 } 68 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks); 69 return 0; 70 } 71 72 static int android_bootloader_message_write( 73 struct blk_desc *dev_desc, 74 const disk_partition_t *part_info, 75 struct android_bootloader_message *message) 76 { 77 ulong message_blocks = sizeof(struct android_bootloader_message) / 78 part_info->blksz + android_bcb_msg_sector_offset(); 79 80 if (message_blocks > part_info->size) { 81 printf("misc partition too small.\n"); 82 return -1; 83 } 84 85 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) != 86 message_blocks) { 87 printf("Could not write to misc partition\n"); 88 return -1; 89 } 90 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks); 91 return 0; 92 } 93 94 static enum android_boot_mode android_bootloader_load_and_clear_mode( 95 struct blk_desc *dev_desc, 96 const disk_partition_t *misc_part_info) 97 { 98 struct android_bootloader_message bcb; 99 100 #ifdef CONFIG_FASTBOOT 101 char *bootloader_str; 102 103 /* Check for message from bootloader stored in RAM from a previous boot. 104 */ 105 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR; 106 if (!strcmp("reboot-bootloader", bootloader_str)) { 107 bootloader_str[0] = '\0'; 108 return ANDROID_BOOT_MODE_BOOTLOADER; 109 } 110 #endif 111 112 /* Check and update the BCB message if needed. */ 113 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) < 114 0) { 115 printf("WARNING: Unable to load the BCB.\n"); 116 return ANDROID_BOOT_MODE_NORMAL; 117 } 118 119 if (!strcmp("bootonce-bootloader", bcb.command)) { 120 /* Erase the message in the BCB since this value should be used 121 * only once. 122 */ 123 memset(bcb.command, 0, sizeof(bcb.command)); 124 android_bootloader_message_write(dev_desc, misc_part_info, 125 &bcb); 126 return ANDROID_BOOT_MODE_BOOTLOADER; 127 } 128 129 if (!strcmp("boot-recovery", bcb.command)) 130 return ANDROID_BOOT_MODE_RECOVERY; 131 132 if (!strcmp("boot-fastboot", bcb.command)) 133 return ANDROID_BOOT_MODE_RECOVERY; 134 135 return ANDROID_BOOT_MODE_NORMAL; 136 } 137 138 int android_bcb_write(char *cmd) 139 { 140 struct android_bootloader_message message = {0}; 141 disk_partition_t part_info; 142 struct blk_desc *dev_desc; 143 int ret; 144 145 if (!cmd) 146 return -ENOMEM; 147 148 if (strlen(cmd) >= 32) 149 return -ENOMEM; 150 151 dev_desc = rockchip_get_bootdev(); 152 if (!dev_desc) { 153 printf("%s: dev_desc is NULL!\n", __func__); 154 return -ENODEV; 155 } 156 157 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, &part_info); 158 if (ret < 0) { 159 printf("%s: Could not found misc partition, just run recovery\n", 160 __func__); 161 return -ENODEV; 162 } 163 164 strcpy(message.command, cmd); 165 return android_bootloader_message_write(dev_desc, &part_info, &message); 166 } 167 168 /** 169 * Return the reboot reason string for the passed boot mode. 170 * 171 * @param mode The Android Boot mode. 172 * @return a pointer to the reboot reason string for mode. 173 */ 174 static const char *android_boot_mode_str(enum android_boot_mode mode) 175 { 176 switch (mode) { 177 case ANDROID_BOOT_MODE_NORMAL: 178 return "(none)"; 179 case ANDROID_BOOT_MODE_RECOVERY: 180 return "recovery"; 181 case ANDROID_BOOT_MODE_BOOTLOADER: 182 return "bootloader"; 183 } 184 return NULL; 185 } 186 187 static int android_bootloader_boot_bootloader(void) 188 { 189 const char *fastboot_cmd = env_get("fastbootcmd"); 190 191 if (fastboot_cmd == NULL) { 192 printf("fastboot_cmd is null, run default fastboot_cmd!\n"); 193 fastboot_cmd = "fastboot usb 0"; 194 } 195 196 return run_command(fastboot_cmd, CMD_FLAG_ENV); 197 } 198 199 #ifdef CONFIG_SUPPORT_OEM_DTB 200 static int android_bootloader_get_fdt(const char *part_name, 201 const char *load_file_name) 202 { 203 struct blk_desc *dev_desc; 204 disk_partition_t part_info; 205 char *fdt_addr = NULL; 206 char dev_part[3] = {0}; 207 loff_t bytes = 0; 208 loff_t pos = 0; 209 loff_t len_read; 210 unsigned long addr = 0; 211 int part_num = -1; 212 int ret; 213 214 dev_desc = rockchip_get_bootdev(); 215 if (!dev_desc) { 216 printf("%s: dev_desc is NULL!\n", __func__); 217 return -1; 218 } 219 220 part_num = part_get_info_by_name(dev_desc, part_name, &part_info); 221 if (part_num < 0) { 222 printf("ANDROID: Could not find partition \"%s\"\n", part_name); 223 return -1; 224 } 225 226 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num); 227 if (fs_set_blk_dev_with_part(dev_desc, part_num)) 228 return -1; 229 230 fdt_addr = env_get("fdt_addr_r"); 231 if (!fdt_addr) { 232 printf("ANDROID: No Found FDT Load Address.\n"); 233 return -1; 234 } 235 addr = simple_strtoul(fdt_addr, NULL, 16); 236 237 ret = fs_read(load_file_name, addr, pos, bytes, &len_read); 238 if (ret < 0) 239 return -1; 240 241 return 0; 242 } 243 #endif 244 245 /* 246 * Test on RK3308 AARCH64 mode (Cortex A35 816 MHZ) boot with eMMC: 247 * 248 * |-------------------------------------------------------------------| 249 * | Format | Size(Byte) | Ratio | Decomp time(ms) | Boot time(ms) | 250 * |-------------------------------------------------------------------| 251 * | Image | 7720968 | | | 488 | 252 * |-------------------------------------------------------------------| 253 * | Image.lz4 | 4119448 | 53% | 59 | 455 | 254 * |-------------------------------------------------------------------| 255 * | Image.lzo | 3858322 | 49% | 141 | 536 | 256 * |-------------------------------------------------------------------| 257 * | Image.gz | 3529108 | 45% | 222 | 609 | 258 * |-------------------------------------------------------------------| 259 * | Image.bz2 | 3295914 | 42% | 2940 | | 260 * |-------------------------------------------------------------------| 261 * | Image.lzma| 2683750 | 34% | | | 262 * |-------------------------------------------------------------------| 263 */ 264 static int sysmem_alloc_uncomp_kernel(ulong andr_hdr, 265 ulong uncomp_kaddr, u32 comp) 266 { 267 struct andr_img_hdr *hdr = (struct andr_img_hdr *)andr_hdr; 268 ulong ksize, kaddr; 269 270 if (comp != IH_COMP_NONE) { 271 /* Release compressed sysmem */ 272 kaddr = env_get_hex("kernel_addr_c", 0); 273 if (!kaddr) 274 kaddr = env_get_hex("kernel_addr_r", 0); 275 kaddr -= hdr->page_size; 276 if (sysmem_free((phys_addr_t)kaddr)) 277 return -EINVAL; 278 279 /* 280 * Use smaller Ratio to get larger estimated uncompress 281 * kernel size. 282 */ 283 if (comp == IH_COMP_ZIMAGE) 284 ksize = hdr->kernel_size * 100 / 45; 285 else if (comp == IH_COMP_LZ4) 286 ksize = hdr->kernel_size * 100 / 50; 287 else if (comp == IH_COMP_LZO) 288 ksize = hdr->kernel_size * 100 / 45; 289 else if (comp == IH_COMP_GZIP) 290 ksize = hdr->kernel_size * 100 / 40; 291 else if (comp == IH_COMP_BZIP2) 292 ksize = hdr->kernel_size * 100 / 40; 293 else if (comp == IH_COMP_LZMA) 294 ksize = hdr->kernel_size * 100 / 30; 295 else 296 ksize = hdr->kernel_size; 297 298 kaddr = uncomp_kaddr; 299 ksize = ALIGN(ksize, 512); 300 if (!sysmem_alloc_base(MEM_UNCOMP_KERNEL, 301 (phys_addr_t)kaddr, ksize)) 302 return -ENOMEM; 303 } 304 305 return 0; 306 } 307 308 int android_bootloader_boot_kernel(unsigned long kernel_address) 309 { 310 char *kernel_addr_r = env_get("kernel_addr_r"); 311 char *kernel_addr_c = env_get("kernel_addr_c"); 312 char *fdt_addr = env_get("fdt_addr_r"); 313 char kernel_addr_str[12]; 314 char comp_str[32] = {0}; 315 ulong comp_type; 316 const char *comp_name[] = { 317 [IH_COMP_NONE] = "IMAGE", 318 [IH_COMP_GZIP] = "GZIP", 319 [IH_COMP_BZIP2] = "BZIP2", 320 [IH_COMP_LZMA] = "LZMA", 321 [IH_COMP_LZO] = "LZO", 322 [IH_COMP_LZ4] = "LZ4", 323 [IH_COMP_ZIMAGE]= "ZIMAGE", 324 }; 325 char *bootm_args[] = { 326 kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 327 328 comp_type = env_get_ulong("os_comp", 10, 0); 329 sprintf(kernel_addr_str, "0x%08lx", kernel_address); 330 331 if (comp_type != IH_COMP_NONE) { 332 if (comp_type == IH_COMP_ZIMAGE && 333 kernel_addr_r && !kernel_addr_c) { 334 kernel_addr_c = kernel_addr_r; 335 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE); 336 } 337 snprintf(comp_str, 32, "%s%s%s", 338 "(Uncompress to ", kernel_addr_r, ")"); 339 } 340 341 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n", 342 comp_name[comp_type], 343 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r, 344 comp_str, fdt_addr); 345 346 hotkey_run(HK_SYSMEM); 347 348 /* 349 * Check whether there is enough space for uncompress kernel, 350 * Actually, here only gives a sysmem warning message when failed 351 * but never return -1. 352 */ 353 if (sysmem_alloc_uncomp_kernel(kernel_address, 354 simple_strtoul(kernel_addr_r, NULL, 16), 355 comp_type)) 356 return -1; 357 358 return do_bootm_states(NULL, 0, ARRAY_SIZE(bootm_args), bootm_args, 359 BOOTM_STATE_START | 360 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER | 361 BOOTM_STATE_LOADOS | 362 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 363 BOOTM_STATE_RAMDISK | 364 #endif 365 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 366 BOOTM_STATE_OS_GO, &images, 1); 367 } 368 369 static char *strjoin(const char **chunks, char separator) 370 { 371 int len, joined_len = 0; 372 char *ret, *current; 373 const char **p; 374 375 for (p = chunks; *p; p++) 376 joined_len += strlen(*p) + 1; 377 378 if (!joined_len) { 379 ret = malloc(1); 380 if (ret) 381 ret[0] = '\0'; 382 return ret; 383 } 384 385 ret = malloc(joined_len); 386 current = ret; 387 if (!ret) 388 return ret; 389 390 for (p = chunks; *p; p++) { 391 len = strlen(*p); 392 memcpy(current, *p, len); 393 current += len; 394 *current = separator; 395 current++; 396 } 397 /* Replace the last separator by a \0. */ 398 current[-1] = '\0'; 399 return ret; 400 } 401 402 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 403 * @return a newly allocated string 404 */ 405 char *android_assemble_cmdline(const char *slot_suffix, 406 const char *extra_args) 407 { 408 const char *cmdline_chunks[16]; 409 const char **current_chunk = cmdline_chunks; 410 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 411 char *allocated_suffix = NULL; 412 char *allocated_serialno = NULL; 413 char *allocated_rootdev = NULL; 414 unsigned long rootdev_len; 415 416 env_cmdline = env_get("bootargs"); 417 if (env_cmdline) 418 *(current_chunk++) = env_cmdline; 419 420 /* The |slot_suffix| needs to be passed to the kernel to know what 421 * slot to boot from. 422 */ 423 if (slot_suffix) { 424 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 425 strlen(slot_suffix) + 1); 426 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 427 + strlen(slot_suffix) + 1); 428 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 429 strcat(allocated_suffix, slot_suffix); 430 *(current_chunk++) = allocated_suffix; 431 } 432 433 serialno = env_get("serial#"); 434 if (serialno) { 435 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 436 strlen(serialno) + 1); 437 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 438 strlen(serialno) + 1); 439 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 440 strcat(allocated_serialno, serialno); 441 *(current_chunk++) = allocated_serialno; 442 } 443 444 rootdev_input = env_get("android_rootdev"); 445 if (rootdev_input) { 446 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 447 allocated_rootdev = malloc(rootdev_len); 448 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 449 cli_simple_process_macros(rootdev_input, 450 allocated_rootdev + 451 strlen(ANDROID_ARG_ROOT)); 452 /* Make sure that the string is null-terminated since the 453 * previous could not copy to the end of the input string if it 454 * is too big. 455 */ 456 allocated_rootdev[rootdev_len - 1] = '\0'; 457 *(current_chunk++) = allocated_rootdev; 458 } 459 460 if (extra_args) 461 *(current_chunk++) = extra_args; 462 463 *(current_chunk++) = NULL; 464 cmdline = strjoin(cmdline_chunks, ' '); 465 free(allocated_suffix); 466 free(allocated_rootdev); 467 return cmdline; 468 } 469 470 #ifdef CONFIG_ANDROID_AVB 471 static void slot_set_unbootable(AvbABSlotData* slot) 472 { 473 slot->priority = 0; 474 slot->tries_remaining = 0; 475 slot->successful_boot = 0; 476 } 477 478 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 479 unsigned long *android_load_address, 480 char *slot_suffix) 481 { 482 const char *requested_partitions[1] = {NULL}; 483 uint8_t unlocked = true; 484 AvbOps *ops; 485 AvbSlotVerifyFlags flags; 486 AvbSlotVerifyData *slot_data[1] = {NULL}; 487 AvbSlotVerifyResult verify_result; 488 AvbABData ab_data, ab_data_orig; 489 size_t slot_index_to_boot = 0; 490 char verify_state[38] = {0}; 491 char can_boot = 1; 492 unsigned long load_address = *android_load_address; 493 struct andr_img_hdr *hdr; 494 495 requested_partitions[0] = boot_partname; 496 ops = avb_ops_user_new(); 497 if (ops == NULL) { 498 printf("avb_ops_user_new() failed!\n"); 499 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 500 } 501 502 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 503 printf("Error determining whether device is unlocked.\n"); 504 505 printf("read_is_device_unlocked() ops returned that device is %s\n", 506 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 507 508 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 509 if (unlocked & LOCK_MASK) 510 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 511 512 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 513 printf("Can not load metadata\n"); 514 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 515 } 516 517 if (!strncmp(slot_suffix, "_a", 2)) 518 slot_index_to_boot = 0; 519 else if (!strncmp(slot_suffix, "_b", 2)) 520 slot_index_to_boot = 1; 521 else 522 slot_index_to_boot = 0; 523 524 verify_result = 525 avb_slot_verify(ops, 526 requested_partitions, 527 slot_suffix, 528 flags, 529 AVB_HASHTREE_ERROR_MODE_RESTART, 530 &slot_data[0]); 531 532 strcat(verify_state, ANDROID_VERIFY_STATE); 533 switch (verify_result) { 534 case AVB_SLOT_VERIFY_RESULT_OK: 535 if (unlocked & LOCK_MASK) 536 strcat(verify_state, "orange"); 537 else 538 strcat(verify_state, "green"); 539 break; 540 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 541 if (unlocked & LOCK_MASK) 542 strcat(verify_state, "orange"); 543 else 544 strcat(verify_state, "yellow"); 545 break; 546 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 547 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 548 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 549 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 550 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 551 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 552 default: 553 if (unlocked & LOCK_MASK) 554 strcat(verify_state, "orange"); 555 else 556 strcat(verify_state, "red"); 557 break; 558 } 559 560 if (!slot_data[0]) { 561 can_boot = 0; 562 goto out; 563 } 564 565 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 566 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 567 (unlocked & LOCK_MASK)) { 568 int len = 0; 569 char *bootargs, *newbootargs; 570 571 if (*slot_data[0]->cmdline) { 572 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 573 len += strlen(slot_data[0]->cmdline); 574 } 575 576 bootargs = env_get("bootargs"); 577 if (bootargs) 578 len += strlen(bootargs); 579 580 newbootargs = malloc(len + 2); 581 582 if (!newbootargs) { 583 puts("Error: malloc in android_slot_verify failed!\n"); 584 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 585 } 586 *newbootargs = '\0'; 587 588 if (bootargs) { 589 strcpy(newbootargs, bootargs); 590 strcat(newbootargs, " "); 591 } 592 if (*slot_data[0]->cmdline) 593 strcat(newbootargs, slot_data[0]->cmdline); 594 env_set("bootargs", newbootargs); 595 596 hdr = (void *)slot_data[0]->loaded_partitions->data; 597 598 /* 599 * populate boot_img_hdr_v3 600 * 601 * If allow verification error: the image is loaded by 602 * ops->get_preloaded_partition() which auto populates 603 * boot_img_hdr_v3. 604 * 605 * If not allow verification error: the image is full loaded 606 * by ops->read_from_partition() which doesn't populate 607 * boot_img_hdr_v3, we need to fix it here. 608 */ 609 if (hdr->header_version >= 3 && 610 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) { 611 struct andr_img_hdr *v3hdr; 612 struct blk_desc *dev_desc; 613 disk_partition_t part; 614 615 dev_desc = rockchip_get_bootdev(); 616 if (!dev_desc) 617 return -1; 618 619 if (part_get_info_by_name(dev_desc, 620 boot_partname, &part) < 0) 621 return -1; 622 623 v3hdr = populate_andr_img_hdr(dev_desc, &part); 624 if (v3hdr) { 625 memcpy(hdr, v3hdr, sizeof(*v3hdr)); 626 free(v3hdr); 627 } 628 } 629 630 /* Reserve page_size */ 631 load_address -= hdr->page_size; 632 if (android_image_memcpy_separate(hdr, &load_address)) { 633 printf("Failed to separate copy android image\n"); 634 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 635 } 636 *android_load_address = load_address; 637 } else { 638 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 639 } 640 641 out: 642 env_update("bootargs", verify_state); 643 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 644 printf("Can not save metadata\n"); 645 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 646 } 647 648 if (slot_data[0] != NULL) 649 avb_slot_verify_data_free(slot_data[0]); 650 651 if ((unlocked & LOCK_MASK) && can_boot) 652 return 0; 653 else 654 return verify_result; 655 } 656 #endif 657 658 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 659 660 /* 661 * Default return index 0. 662 */ 663 __weak int board_select_fdt_index(ulong dt_table_hdr) 664 { 665 /* 666 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 667 * over all dt entry of DT image and pick up which they want. 668 * 669 * Example: 670 * struct dt_table_entry *entry; 671 * int index; 672 * 673 * dt_for_each_entry(entry, dt_table_hdr, index) { 674 * 675 * .... (use entry) 676 * } 677 * 678 * return index; 679 */ 680 return 0; 681 } 682 683 static int android_get_dtbo(ulong *fdt_dtbo, 684 const struct andr_img_hdr *hdr, 685 int *index, const char *part_dtbo) 686 { 687 struct dt_table_header *dt_hdr = NULL; 688 struct blk_desc *dev_desc; 689 disk_partition_t part_info; 690 u32 blk_offset, blk_cnt; 691 void *buf; 692 ulong e_addr; 693 u32 e_size; 694 int e_idx; 695 int ret; 696 697 /* Get partition info */ 698 dev_desc = rockchip_get_bootdev(); 699 if (!dev_desc) 700 return -ENODEV; 701 702 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info); 703 if (ret < 0) { 704 printf("No %s partition, ret=%d\n", part_dtbo, ret); 705 return ret; 706 } 707 708 /* Check dt table header */ 709 if (!strcmp(part_dtbo, PART_RECOVERY)) 710 blk_offset = part_info.start + 711 (hdr->recovery_dtbo_offset / part_info.blksz); 712 else 713 blk_offset = part_info.start; 714 715 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 716 if (!dt_hdr) 717 return -ENOMEM; 718 719 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 720 if (ret != 1) 721 goto out1; 722 723 if (!android_dt_check_header((ulong)dt_hdr)) { 724 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic); 725 ret = -EINVAL; 726 goto out1; 727 } 728 729 #ifdef DEBUG 730 android_dt_print_contents((ulong)dt_hdr); 731 #endif 732 733 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 734 part_info.blksz); 735 /* Read all DT Image */ 736 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 737 if (!buf) { 738 ret = -ENOMEM; 739 goto out1; 740 } 741 742 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 743 if (ret != blk_cnt) 744 goto out2; 745 746 e_idx = board_select_fdt_index((ulong)buf); 747 if (e_idx < 0) { 748 printf("%s: failed to select board fdt index\n", __func__); 749 ret = -EINVAL; 750 goto out2; 751 } 752 753 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 754 if (!ret) { 755 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 756 ret = -EINVAL; 757 goto out2; 758 } 759 760 if (fdt_dtbo) 761 *fdt_dtbo = e_addr; 762 if (index) 763 *index = e_idx; 764 765 free(dt_hdr); 766 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 767 e_addr, e_size, e_idx, part_dtbo); 768 769 return 0; 770 771 out2: 772 free(buf); 773 out1: 774 free(dt_hdr); 775 776 return ret; 777 } 778 779 int android_fdt_overlay_apply(void *fdt_addr) 780 { 781 struct andr_img_hdr *hdr; 782 struct blk_desc *dev_desc; 783 const char *part_boot; 784 disk_partition_t part_info; 785 char *part_dtbo; 786 char buf[32] = {0}; 787 ulong fdt_dtbo = -1; 788 int index = -1; 789 int ret; 790 791 if (IS_ENABLED(CONFIG_ANDROID_AB) || 792 (rockchip_get_boot_mode() != BOOT_MODE_RECOVERY)) { 793 part_boot = PART_BOOT; 794 part_dtbo = PART_DTBO; 795 } else { 796 part_boot = PART_RECOVERY; 797 part_dtbo = PART_RECOVERY; 798 } 799 800 dev_desc = rockchip_get_bootdev(); 801 if (!dev_desc) 802 return -ENODEV; 803 804 ret = part_get_info_by_name(dev_desc, part_boot, &part_info); 805 if (ret < 0) 806 return ret; 807 808 hdr = populate_andr_img_hdr(dev_desc, &part_info); 809 if (!hdr) 810 return -EINVAL; 811 #ifdef DEBUG 812 android_print_contents(hdr); 813 #endif 814 815 /* 816 * recovery_dtbo fields 817 * 818 * boot_img_hdr_v0: unsupported 819 * boot_img_hdr_v1,2: supported 820 * boot_img_hdr_v3 + boot.img: supported 821 * boot_img_hdr_v3 + recovery.img: unsupported 822 */ 823 if ((hdr->header_version == 0) || 824 (hdr->header_version == 3 && !strcmp(part_boot, PART_RECOVERY)) || 825 (hdr->header_version > 3)) 826 goto out; 827 828 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index, part_dtbo); 829 if (!ret) { 830 phys_size_t fdt_size; 831 /* Must incease size before overlay */ 832 fdt_size = fdt_totalsize((void *)fdt_addr) + 833 fdt_totalsize((void *)fdt_dtbo); 834 if (sysmem_free((phys_addr_t)fdt_addr)) 835 goto out; 836 837 if (!sysmem_alloc_base(MEM_FDT_DTBO, 838 (phys_addr_t)fdt_addr, 839 fdt_size + CONFIG_SYS_FDT_PAD)) 840 goto out; 841 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 842 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 843 if (!ret) { 844 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 845 env_update("bootargs", buf); 846 printf("ANDROID: fdt overlay OK\n"); 847 } else { 848 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 849 } 850 } 851 852 out: 853 free(hdr); 854 855 return 0; 856 } 857 #endif 858 859 int android_image_load_by_partname(struct blk_desc *dev_desc, 860 const char *boot_partname, 861 unsigned long *load_address) 862 { 863 disk_partition_t boot_part; 864 int ret, part_num; 865 866 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part); 867 if (part_num < 0) { 868 printf("%s: Can't find part: %s\n", __func__, boot_partname); 869 return -1; 870 } 871 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 872 boot_part.name, part_num); 873 874 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 875 if (ret < 0) { 876 debug("%s: %s part load fail, ret=%d\n", 877 __func__, boot_part.name, ret); 878 return ret; 879 } 880 *load_address = ret; 881 882 return 0; 883 } 884 885 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 886 unsigned long load_address) 887 { 888 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 889 disk_partition_t misc_part_info; 890 int part_num; 891 char *command_line; 892 char slot_suffix[3] = {0}; 893 const char *mode_cmdline = NULL; 894 char *boot_partname = ANDROID_PARTITION_BOOT; 895 896 /* 897 * 1. Load MISC partition and determine the boot mode 898 * clear its value for the next boot if needed. 899 */ 900 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 901 &misc_part_info); 902 if (part_num < 0) { 903 printf("Could not find misc partition\n"); 904 } else { 905 #ifdef CONFIG_ANDROID_KEYMASTER_CA 906 /* load attestation key from misc partition. */ 907 load_attestation_key(dev_desc, &misc_part_info); 908 #endif 909 910 mode = android_bootloader_load_and_clear_mode(dev_desc, 911 &misc_part_info); 912 #ifdef CONFIG_RKIMG_BOOTLOADER 913 if (mode == ANDROID_BOOT_MODE_NORMAL) { 914 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 915 mode = ANDROID_BOOT_MODE_RECOVERY; 916 } 917 #endif 918 } 919 920 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 921 #ifdef CONFIG_ANDROID_AB 922 /* Get current slot_suffix */ 923 if (ab_get_slot_suffix(slot_suffix)) 924 return -1; 925 #endif 926 switch (mode) { 927 case ANDROID_BOOT_MODE_NORMAL: 928 /* In normal mode, we load the kernel from "boot" but append 929 * "skip_initramfs" to the cmdline to make it ignore the 930 * recovery initramfs in the boot partition. 931 */ 932 #ifdef CONFIG_ANDROID_AB 933 /* In A/B, the recovery image is built as boot.img, containing the 934 * recovery's ramdisk. Previously, bootloader used the skip_initramfs 935 * kernel command line parameter to decide which mode to boot into. 936 * For Android >=10 and with dynamic partition support, the bootloader 937 * MUST NOT pass skip_initramfs to the kernel command-line. 938 * Instead, bootloader should pass androidboot.force_normal_boot=1 939 * and then Android's first-stage init in ramdisk 940 * will skip recovery and boot normal Android. 941 */ 942 if (ab_is_support_dynamic_partition(dev_desc)) { 943 mode_cmdline = "androidboot.force_normal_boot=1"; 944 } else { 945 mode_cmdline = "skip_initramfs"; 946 } 947 #endif 948 break; 949 case ANDROID_BOOT_MODE_RECOVERY: 950 /* In recovery mode we still boot the kernel from "boot" but 951 * don't skip the initramfs so it boots to recovery. 952 */ 953 #ifndef CONFIG_ANDROID_AB 954 boot_partname = ANDROID_PARTITION_RECOVERY; 955 #endif 956 break; 957 case ANDROID_BOOT_MODE_BOOTLOADER: 958 /* Bootloader mode enters fastboot. If this operation fails we 959 * simply return since we can't recover from this situation by 960 * switching to another slot. 961 */ 962 return android_bootloader_boot_bootloader(); 963 } 964 965 #ifdef CONFIG_ANDROID_AVB 966 uint8_t vboot_flag = 0; 967 disk_partition_t vbmeta_part_info; 968 969 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) { 970 printf("Can't read vboot flag\n"); 971 return -1; 972 } 973 974 if (vboot_flag) { 975 printf("Vboot=1, SecureBoot enabled, AVB verify\n"); 976 if (android_slot_verify(boot_partname, &load_address, 977 slot_suffix)) { 978 printf("AVB verify failed\n"); 979 reset_cpu_if_android_ab(); 980 981 return -1; 982 } 983 } else { 984 part_num = part_get_info_by_name(dev_desc, 985 ANDROID_PARTITION_VBMETA, 986 &vbmeta_part_info); 987 if (part_num < 0) { 988 printf("Not AVB images, AVB skip\n"); 989 env_update("bootargs", 990 "androidboot.verifiedbootstate=orange"); 991 if (android_image_load_by_partname(dev_desc, 992 boot_partname, 993 &load_address)) { 994 printf("Android image load failed\n"); 995 return -1; 996 } 997 } else { 998 printf("Vboot=0, AVB images, AVB verify\n"); 999 if (android_slot_verify(boot_partname, &load_address, 1000 slot_suffix)) { 1001 printf("AVB verify failed\n"); 1002 reset_cpu_if_android_ab(); 1003 1004 return -1; 1005 } 1006 } 1007 } 1008 #else 1009 /* 1010 * 2. Load the boot/recovery from the desired "boot" partition. 1011 * Determine if this is an AOSP image. 1012 */ 1013 if (android_image_load_by_partname(dev_desc, 1014 boot_partname, 1015 &load_address)) { 1016 printf("Android image load failed\n"); 1017 return -1; 1018 } 1019 #endif 1020 1021 #ifdef CONFIG_ANDROID_AB 1022 ab_update_root_uuid(); 1023 #endif 1024 1025 /* Set Android root variables. */ 1026 env_set_ulong("android_root_devnum", dev_desc->devnum); 1027 env_set("android_slotsufix", slot_suffix); 1028 1029 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1030 /* read oem unlock status and attach to bootargs */ 1031 uint8_t unlock = 0; 1032 TEEC_Result result; 1033 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1034 result = trusty_read_oem_unlock(&unlock); 1035 if (result) { 1036 printf("read oem unlock status with error : 0x%x\n", result); 1037 } else { 1038 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1039 env_update("bootargs", oem_unlock); 1040 } 1041 #endif 1042 1043 /* Assemble the command line */ 1044 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1045 env_update("bootargs", command_line); 1046 1047 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1048 1049 #ifdef CONFIG_SUPPORT_OEM_DTB 1050 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1051 ANDROID_ARG_FDT_FILENAME)) { 1052 printf("Can not get the fdt data from oem!\n"); 1053 } 1054 #endif 1055 #ifdef CONFIG_OPTEE_CLIENT 1056 if (trusty_notify_optee_uboot_end()) 1057 printf("Close optee client failed!\n"); 1058 #endif 1059 1060 #ifdef CONFIG_ANDROID_AB 1061 if (ab_decrease_tries()) 1062 printf("Decrease ab tries count fail!\n"); 1063 #endif 1064 1065 android_bootloader_boot_kernel(load_address); 1066 1067 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1068 return -1; 1069 } 1070 1071 int android_avb_boot_flow(unsigned long kernel_address) 1072 { 1073 struct blk_desc *dev_desc; 1074 disk_partition_t boot_part_info; 1075 int ret; 1076 1077 dev_desc = rockchip_get_bootdev(); 1078 if (!dev_desc) { 1079 printf("%s: dev_desc is NULL!\n", __func__); 1080 return -1; 1081 } 1082 1083 /* Load the kernel from the desired "boot" partition. */ 1084 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1085 &boot_part_info); 1086 if (ret < 0) { 1087 printf("%s: failed to get boot part\n", __func__); 1088 return ret; 1089 } 1090 1091 ret = android_image_load(dev_desc, &boot_part_info, 1092 kernel_address, -1UL); 1093 if (ret < 0) { 1094 printf("Android avb boot failed, error %d.\n", ret); 1095 return ret; 1096 } 1097 1098 android_bootloader_boot_kernel(kernel_address); 1099 1100 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1101 return -1; 1102 } 1103 1104 int android_boot_flow(unsigned long kernel_address) 1105 { 1106 struct blk_desc *dev_desc; 1107 disk_partition_t boot_part_info; 1108 int ret; 1109 1110 dev_desc = rockchip_get_bootdev(); 1111 if (!dev_desc) { 1112 printf("%s: dev_desc is NULL!\n", __func__); 1113 return -1; 1114 } 1115 /* Load the kernel from the desired "boot" partition. */ 1116 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1117 &boot_part_info); 1118 if (ret < 0) { 1119 printf("%s: failed to get boot part\n", __func__); 1120 return ret; 1121 } 1122 1123 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1124 -1UL); 1125 if (ret < 0) 1126 return ret; 1127 1128 android_bootloader_boot_kernel(kernel_address); 1129 1130 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1131 return -1; 1132 } 1133