1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (c) 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de> 4 */ 5 6#include <common.h> 7#include <env.h> 8#include <image.h> 9#include <image-android-dt.h> 10#include <android_image.h> 11#include <malloc.h> 12#include <errno.h> 13#include <asm/unaligned.h> 14#include <mapmem.h> 15#include <linux/libfdt.h> 16 17#define ANDROID_IMAGE_DEFAULT_KERNEL_ADDR 0x10008000 18 19static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1]; 20 21static ulong checksum(const unsigned char *buffer, ulong size) 22{ 23 ulong sum = 0; 24 25 for (ulong i = 0; i < size; i++) 26 sum += buffer[i]; 27 return sum; 28} 29 30static bool is_trailer_present(ulong bootconfig_end_addr) 31{ 32 return !strncmp((char *)(bootconfig_end_addr - BOOTCONFIG_MAGIC_SIZE), 33 BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_SIZE); 34} 35 36static ulong add_trailer(ulong bootconfig_start_addr, ulong bootconfig_size) 37{ 38 ulong end; 39 ulong sum; 40 41 if (!bootconfig_start_addr) 42 return -1; 43 if (!bootconfig_size) 44 return 0; 45 46 end = bootconfig_start_addr + bootconfig_size; 47 if (is_trailer_present(end)) 48 return 0; 49 50 memcpy((void *)(end), &bootconfig_size, BOOTCONFIG_SIZE_SIZE); 51 sum = checksum((unsigned char *)bootconfig_start_addr, bootconfig_size); 52 memcpy((void *)(end + BOOTCONFIG_SIZE_SIZE), &sum, 53 BOOTCONFIG_CHECKSUM_SIZE); 54 memcpy((void *)(end + BOOTCONFIG_SIZE_SIZE + BOOTCONFIG_CHECKSUM_SIZE), 55 BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_SIZE); 56 57 return BOOTCONFIG_TRAILER_SIZE; 58} 59 60static void android_boot_image_v3_v4_parse_hdr(const struct andr_boot_img_hdr_v3 *hdr, 61 struct andr_image_data *data) 62{ 63 ulong end; 64 65 data->kcmdline = hdr->cmdline; 66 data->header_version = hdr->header_version; 67 data->ramdisk_ptr = env_get_ulong("ramdisk_addr_r", 16, 0); 68 69 /* 70 * The header takes a full page, the remaining components are aligned 71 * on page boundary. 72 */ 73 end = (ulong)hdr; 74 end += ANDR_GKI_PAGE_SIZE; 75 data->kernel_ptr = end; 76 data->kernel_size = hdr->kernel_size; 77 end += ALIGN(hdr->kernel_size, ANDR_GKI_PAGE_SIZE); 78 data->ramdisk_size = hdr->ramdisk_size; 79 data->boot_ramdisk_size = hdr->ramdisk_size; 80 end += ALIGN(hdr->ramdisk_size, ANDR_GKI_PAGE_SIZE); 81 82 if (hdr->header_version > 3) 83 end += ALIGN(hdr->signature_size, ANDR_GKI_PAGE_SIZE); 84 85 data->boot_img_total_size = end - (ulong)hdr; 86} 87 88static void android_vendor_boot_image_v3_v4_parse_hdr(const struct andr_vnd_boot_img_hdr 89 *hdr, struct andr_image_data *data) 90{ 91 ulong end; 92 93 /* 94 * The header takes a full page, the remaining components are aligned 95 * on page boundary. 96 */ 97 data->kcmdline_extra = hdr->cmdline; 98 data->tags_addr = hdr->tags_addr; 99 data->image_name = hdr->name; 100 data->kernel_addr = hdr->kernel_addr; 101 data->ramdisk_addr = hdr->ramdisk_addr; 102 data->dtb_load_addr = hdr->dtb_addr; 103 data->bootconfig_size = hdr->bootconfig_size; 104 end = (ulong)hdr; 105 end += hdr->page_size; 106 if (hdr->vendor_ramdisk_size) { 107 data->vendor_ramdisk_ptr = end; 108 data->vendor_ramdisk_size = hdr->vendor_ramdisk_size; 109 data->ramdisk_size += hdr->vendor_ramdisk_size; 110 end += ALIGN(hdr->vendor_ramdisk_size, hdr->page_size); 111 } 112 113 data->dtb_ptr = end; 114 data->dtb_size = hdr->dtb_size; 115 116 end += ALIGN(hdr->dtb_size, hdr->page_size); 117 end += ALIGN(hdr->vendor_ramdisk_table_size, hdr->page_size); 118 data->bootconfig_addr = end; 119 if (hdr->bootconfig_size) { 120 data->bootconfig_size += add_trailer(data->bootconfig_addr, 121 data->bootconfig_size); 122 data->ramdisk_size += data->bootconfig_size; 123 } 124 end += ALIGN(data->bootconfig_size, hdr->page_size); 125 data->vendor_boot_img_total_size = end - (ulong)hdr; 126} 127 128static void android_boot_image_v0_v1_v2_parse_hdr(const struct andr_boot_img_hdr_v0 *hdr, 129 struct andr_image_data *data) 130{ 131 ulong end; 132 133 data->image_name = hdr->name; 134 data->kcmdline = hdr->cmdline; 135 data->kernel_addr = hdr->kernel_addr; 136 data->ramdisk_addr = hdr->ramdisk_addr; 137 data->header_version = hdr->header_version; 138 data->dtb_load_addr = hdr->dtb_addr; 139 140 end = (ulong)hdr; 141 142 /* 143 * The header takes a full page, the remaining components are aligned 144 * on page boundary 145 */ 146 147 end += hdr->page_size; 148 149 data->kernel_ptr = end; 150 data->kernel_size = hdr->kernel_size; 151 end += ALIGN(hdr->kernel_size, hdr->page_size); 152 153 data->ramdisk_ptr = end; 154 data->ramdisk_size = hdr->ramdisk_size; 155 end += ALIGN(hdr->ramdisk_size, hdr->page_size); 156 157 data->second_ptr = end; 158 data->second_size = hdr->second_size; 159 end += ALIGN(hdr->second_size, hdr->page_size); 160 161 if (hdr->header_version >= 1) { 162 data->recovery_dtbo_ptr = end; 163 data->recovery_dtbo_size = hdr->recovery_dtbo_size; 164 end += ALIGN(hdr->recovery_dtbo_size, hdr->page_size); 165 } 166 167 if (hdr->header_version >= 2) { 168 data->dtb_ptr = end; 169 data->dtb_size = hdr->dtb_size; 170 end += ALIGN(hdr->dtb_size, hdr->page_size); 171 } 172 173 data->boot_img_total_size = end - (ulong)hdr; 174} 175 176bool android_image_get_data(const void *boot_hdr, const void *vendor_boot_hdr, 177 struct andr_image_data *data) 178{ 179 if (!boot_hdr || !data) { 180 printf("boot_hdr or data params can't be NULL\n"); 181 return false; 182 } 183 184 if (!is_android_boot_image_header(boot_hdr)) { 185 printf("Incorrect boot image header\n"); 186 return false; 187 } 188 189 if (((struct andr_boot_img_hdr_v0 *)boot_hdr)->header_version > 2) { 190 if (!vendor_boot_hdr) { 191 printf("For boot header v3+ vendor boot image has to be provided\n"); 192 return false; 193 } 194 if (!is_android_vendor_boot_image_header(vendor_boot_hdr)) { 195 printf("Incorrect vendor boot image header\n"); 196 return false; 197 } 198 android_boot_image_v3_v4_parse_hdr(boot_hdr, data); 199 android_vendor_boot_image_v3_v4_parse_hdr(vendor_boot_hdr, data); 200 } else { 201 android_boot_image_v0_v1_v2_parse_hdr(boot_hdr, data); 202 } 203 204 return true; 205} 206 207static ulong android_image_get_kernel_addr(struct andr_image_data *img_data) 208{ 209 /* 210 * All the Android tools that generate a boot.img use this 211 * address as the default. 212 * 213 * Even though it doesn't really make a lot of sense, and it 214 * might be valid on some platforms, we treat that adress as 215 * the default value for this field, and try to execute the 216 * kernel in place in such a case. 217 * 218 * Otherwise, we will return the actual value set by the user. 219 */ 220 if (img_data->kernel_addr == ANDROID_IMAGE_DEFAULT_KERNEL_ADDR) 221 return img_data->kernel_ptr; 222 223 /* 224 * abootimg creates images where all load addresses are 0 225 * and we need to fix them. 226 */ 227 if (img_data->kernel_addr == 0 && img_data->ramdisk_addr == 0) 228 return env_get_ulong("kernel_addr_r", 16, 0); 229 230 return img_data->kernel_addr; 231} 232 233/** 234 * android_image_get_kernel() - processes kernel part of Android boot images 235 * @hdr: Pointer to boot image header, which is at the start 236 * of the image. 237 * @vendor_boot_img: Pointer to vendor boot image header, which is at the 238 * start of the image. 239 * @verify: Checksum verification flag. Currently unimplemented. 240 * @os_data: Pointer to a ulong variable, will hold os data start 241 * address. 242 * @os_len: Pointer to a ulong variable, will hold os data length. 243 * 244 * This function returns the os image's start address and length. Also, 245 * it appends the kernel command line to the bootargs env variable. 246 * 247 * Return: Zero, os start address and length on success, 248 * otherwise on failure. 249 */ 250int android_image_get_kernel(const void *hdr, 251 const void *vendor_boot_img, int verify, 252 ulong *os_data, ulong *os_len) 253{ 254 struct andr_image_data img_data = {0}; 255 u32 kernel_addr; 256 const struct legacy_img_hdr *ihdr; 257 258 if (!android_image_get_data(hdr, vendor_boot_img, &img_data)) 259 return -EINVAL; 260 261 kernel_addr = android_image_get_kernel_addr(&img_data); 262 ihdr = (const struct legacy_img_hdr *)img_data.kernel_ptr; 263 264 /* 265 * Not all Android tools use the id field for signing the image with 266 * sha1 (or anything) so we don't check it. It is not obvious that the 267 * string is null terminated so we take care of this. 268 */ 269 strlcpy(andr_tmp_str, img_data.image_name, ANDR_BOOT_NAME_SIZE); 270 andr_tmp_str[ANDR_BOOT_NAME_SIZE] = '\0'; 271 if (strlen(andr_tmp_str)) 272 printf("Android's image name: %s\n", andr_tmp_str); 273 274 printf("Kernel load addr 0x%08x size %u KiB\n", 275 kernel_addr, DIV_ROUND_UP(img_data.kernel_size, 1024)); 276 277 int len = 0; 278 if (*img_data.kcmdline) { 279 printf("Kernel command line: %s\n", img_data.kcmdline); 280 len += strlen(img_data.kcmdline); 281 } 282 283 if (img_data.kcmdline_extra) { 284 printf("Kernel extra command line: %s\n", img_data.kcmdline_extra); 285 len += strlen(img_data.kcmdline_extra); 286 } 287 288 char *bootargs = env_get("bootargs"); 289 if (bootargs) 290 len += strlen(bootargs); 291 292 char *newbootargs = malloc(len + 2); 293 if (!newbootargs) { 294 puts("Error: malloc in android_image_get_kernel failed!\n"); 295 return -ENOMEM; 296 } 297 *newbootargs = '\0'; 298 299 if (bootargs) { 300 strcpy(newbootargs, bootargs); 301 strcat(newbootargs, " "); 302 } 303 304 if (*img_data.kcmdline) 305 strcat(newbootargs, img_data.kcmdline); 306 307 if (img_data.kcmdline_extra) { 308 strcat(newbootargs, " "); 309 strcat(newbootargs, img_data.kcmdline_extra); 310 } 311 312 env_set("bootargs", newbootargs); 313 314 if (os_data) { 315 if (image_get_magic(ihdr) == IH_MAGIC) { 316 *os_data = image_get_data(ihdr); 317 } else { 318 *os_data = img_data.kernel_ptr; 319 } 320 } 321 if (os_len) { 322 if (image_get_magic(ihdr) == IH_MAGIC) 323 *os_len = image_get_data_size(ihdr); 324 else 325 *os_len = img_data.kernel_size; 326 } 327 return 0; 328} 329 330bool is_android_vendor_boot_image_header(const void *vendor_boot_img) 331{ 332 return !memcmp(VENDOR_BOOT_MAGIC, vendor_boot_img, ANDR_VENDOR_BOOT_MAGIC_SIZE); 333} 334 335bool is_android_boot_image_header(const void *hdr) 336{ 337 return !memcmp(ANDR_BOOT_MAGIC, hdr, ANDR_BOOT_MAGIC_SIZE); 338} 339 340ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr, 341 const void *vendor_boot_img) 342{ 343 struct andr_image_data img_data; 344 345 if (!android_image_get_data(hdr, vendor_boot_img, &img_data)) 346 return -EINVAL; 347 348 if (img_data.header_version > 2) 349 return 0; 350 351 return img_data.boot_img_total_size; 352} 353 354ulong android_image_get_kload(const void *hdr, 355 const void *vendor_boot_img) 356{ 357 struct andr_image_data img_data; 358 359 if (!android_image_get_data(hdr, vendor_boot_img, &img_data)) 360 return -EINVAL; 361 362 return android_image_get_kernel_addr(&img_data); 363} 364 365ulong android_image_get_kcomp(const void *hdr, 366 const void *vendor_boot_img) 367{ 368 struct andr_image_data img_data; 369 const void *p; 370 371 if (!android_image_get_data(hdr, vendor_boot_img, &img_data)) 372 return -EINVAL; 373 374 p = (const void *)img_data.kernel_ptr; 375 if (image_get_magic((struct legacy_img_hdr *)p) == IH_MAGIC) 376 return image_get_comp((struct legacy_img_hdr *)p); 377 else if (get_unaligned_le32(p) == LZ4F_MAGIC) 378 return IH_COMP_LZ4; 379 else 380 return image_decomp_type(p, sizeof(u32)); 381} 382 383int android_image_get_ramdisk(const void *hdr, const void *vendor_boot_img, 384 ulong *rd_data, ulong *rd_len) 385{ 386 struct andr_image_data img_data = {0}; 387 ulong ramdisk_ptr; 388 389 if (!android_image_get_data(hdr, vendor_boot_img, &img_data)) 390 return -EINVAL; 391 392 if (!img_data.ramdisk_size) { 393 *rd_data = *rd_len = 0; 394 return -1; 395 } 396 if (img_data.header_version > 2) { 397 ramdisk_ptr = img_data.ramdisk_ptr; 398 memcpy((void *)(ramdisk_ptr), (void *)img_data.vendor_ramdisk_ptr, 399 img_data.vendor_ramdisk_size); 400 memcpy((void *)(ramdisk_ptr + img_data.vendor_ramdisk_size), 401 (void *)img_data.ramdisk_ptr, 402 img_data.boot_ramdisk_size); 403 if (img_data.bootconfig_size) { 404 memcpy((void *) 405 (ramdisk_ptr + img_data.vendor_ramdisk_size + 406 img_data.boot_ramdisk_size), 407 (void *)img_data.bootconfig_addr, 408 img_data.bootconfig_size); 409 } 410 } 411 412 printf("RAM disk load addr 0x%08lx size %u KiB\n", 413 img_data.ramdisk_ptr, DIV_ROUND_UP(img_data.ramdisk_size, 1024)); 414 415 *rd_data = img_data.ramdisk_ptr; 416 417 *rd_len = img_data.ramdisk_size; 418 return 0; 419} 420 421int android_image_get_second(const void *hdr, ulong *second_data, ulong *second_len) 422{ 423 struct andr_image_data img_data; 424 425 if (!android_image_get_data(hdr, NULL, &img_data)) 426 return -EINVAL; 427 428 if (img_data.header_version > 2) { 429 printf("Second stage bootloader is only supported for boot image version <= 2\n"); 430 return -EOPNOTSUPP; 431 } 432 433 if (!img_data.second_size) { 434 *second_data = *second_len = 0; 435 return -1; 436 } 437 438 *second_data = img_data.second_ptr; 439 440 printf("second address is 0x%lx\n",*second_data); 441 442 *second_len = img_data.second_size; 443 return 0; 444} 445 446/** 447 * android_image_get_dtbo() - Get address and size of recovery DTBO image. 448 * @hdr_addr: Boot image header address 449 * @addr: If not NULL, will contain address of recovery DTBO image 450 * @size: If not NULL, will contain size of recovery DTBO image 451 * 452 * Get the address and size of DTBO image in "Recovery DTBO" area of Android 453 * Boot Image in RAM. The format of this image is Android DTBO (see 454 * corresponding "DTB/DTBO Partitions" AOSP documentation for details). Once 455 * the address is obtained from this function, one can use 'adtimg' U-Boot 456 * command or android_dt_*() functions to extract desired DTBO blob. 457 * 458 * This DTBO (included in boot image) is only needed for non-A/B devices, and it 459 * only can be found in recovery image. On A/B devices we can always rely on 460 * "dtbo" partition. See "Including DTBO in Recovery for Non-A/B Devices" in 461 * AOSP documentation for details. 462 * 463 * Return: true on success or false on error. 464 */ 465bool android_image_get_dtbo(ulong hdr_addr, ulong *addr, u32 *size) 466{ 467 const struct andr_boot_img_hdr_v0 *hdr; 468 ulong dtbo_img_addr; 469 bool ret = true; 470 471 hdr = map_sysmem(hdr_addr, sizeof(*hdr)); 472 if (!is_android_boot_image_header(hdr)) { 473 printf("Error: Boot Image header is incorrect\n"); 474 ret = false; 475 goto exit; 476 } 477 478 if (hdr->header_version != 1 && hdr->header_version != 2) { 479 printf("Error: header version must be >= 1 and <= 2 to get dtbo\n"); 480 ret = false; 481 goto exit; 482 } 483 484 if (hdr->recovery_dtbo_size == 0) { 485 printf("Error: recovery_dtbo_size is 0\n"); 486 ret = false; 487 goto exit; 488 } 489 490 /* Calculate the address of DTB area in boot image */ 491 dtbo_img_addr = hdr_addr; 492 dtbo_img_addr += hdr->page_size; 493 dtbo_img_addr += ALIGN(hdr->kernel_size, hdr->page_size); 494 dtbo_img_addr += ALIGN(hdr->ramdisk_size, hdr->page_size); 495 dtbo_img_addr += ALIGN(hdr->second_size, hdr->page_size); 496 497 if (addr) 498 *addr = dtbo_img_addr; 499 if (size) 500 *size = hdr->recovery_dtbo_size; 501 502exit: 503 unmap_sysmem(hdr); 504 return ret; 505} 506 507/** 508 * android_image_get_dtb_img_addr() - Get the address of DTB area in boot image. 509 * @hdr_addr: Boot image header address 510 * @vhdr_addr: Vendor Boot image header address 511 * @addr: Will contain the address of DTB area in boot image 512 * 513 * Return: true on success or false on fail. 514 */ 515static bool android_image_get_dtb_img_addr(ulong hdr_addr, ulong vhdr_addr, ulong *addr) 516{ 517 const struct andr_boot_img_hdr_v0 *hdr; 518 const struct andr_vnd_boot_img_hdr *v_hdr; 519 ulong dtb_img_addr; 520 bool ret = true; 521 522 hdr = map_sysmem(hdr_addr, sizeof(*hdr)); 523 if (!is_android_boot_image_header(hdr)) { 524 printf("Error: Boot Image header is incorrect\n"); 525 ret = false; 526 goto exit; 527 } 528 529 if (hdr->header_version < 2) { 530 printf("Error: header_version must be >= 2 to get dtb\n"); 531 ret = false; 532 goto exit; 533 } 534 535 if (hdr->header_version == 2) { 536 if (!hdr->dtb_size) { 537 printf("Error: dtb_size is 0\n"); 538 ret = false; 539 goto exit; 540 } 541 /* Calculate the address of DTB area in boot image */ 542 dtb_img_addr = hdr_addr; 543 dtb_img_addr += hdr->page_size; 544 dtb_img_addr += ALIGN(hdr->kernel_size, hdr->page_size); 545 dtb_img_addr += ALIGN(hdr->ramdisk_size, hdr->page_size); 546 dtb_img_addr += ALIGN(hdr->second_size, hdr->page_size); 547 dtb_img_addr += ALIGN(hdr->recovery_dtbo_size, hdr->page_size); 548 549 *addr = dtb_img_addr; 550 } 551 552 if (hdr->header_version > 2) { 553 v_hdr = map_sysmem(vhdr_addr, sizeof(*v_hdr)); 554 if (!v_hdr->dtb_size) { 555 printf("Error: dtb_size is 0\n"); 556 ret = false; 557 unmap_sysmem(v_hdr); 558 goto exit; 559 } 560 /* Calculate the address of DTB area in boot image */ 561 dtb_img_addr = vhdr_addr; 562 dtb_img_addr += v_hdr->page_size; 563 if (v_hdr->vendor_ramdisk_size) 564 dtb_img_addr += ALIGN(v_hdr->vendor_ramdisk_size, v_hdr->page_size); 565 *addr = dtb_img_addr; 566 unmap_sysmem(v_hdr); 567 goto exit; 568 } 569exit: 570 unmap_sysmem(hdr); 571 return ret; 572} 573 574/** 575 * android_image_get_dtb_by_index() - Get address and size of blob in DTB area. 576 * @hdr_addr: Boot image header address 577 * @vendor_boot_img: Pointer to vendor boot image header, which is at the start of the image. 578 * @index: Index of desired DTB in DTB area (starting from 0) 579 * @addr: If not NULL, will contain address to specified DTB 580 * @size: If not NULL, will contain size of specified DTB 581 * 582 * Get the address and size of DTB blob by its index in DTB area of Android 583 * Boot Image in RAM. 584 * 585 * Return: true on success or false on error. 586 */ 587bool android_image_get_dtb_by_index(ulong hdr_addr, ulong vendor_boot_img, 588 u32 index, ulong *addr, u32 *size) 589{ 590 struct andr_image_data img_data; 591 const struct andr_boot_img_hdr_v0 *hdr; 592 const struct andr_vnd_boot_img_hdr *vhdr; 593 594 hdr = map_sysmem(hdr_addr, sizeof(*hdr)); 595 if (vendor_boot_img != -1) 596 vhdr = map_sysmem(vendor_boot_img, sizeof(*vhdr)); 597 if (!android_image_get_data(hdr, vhdr, &img_data)) { 598 if (vendor_boot_img != -1) 599 unmap_sysmem(vhdr); 600 unmap_sysmem(hdr); 601 return false; 602 } 603 if (vendor_boot_img != -1) 604 unmap_sysmem(vhdr); 605 unmap_sysmem(hdr); 606 607 ulong dtb_img_addr; /* address of DTB part in boot image */ 608 u32 dtb_img_size; /* size of DTB payload in boot image */ 609 ulong dtb_addr; /* address of DTB blob with specified index */ 610 u32 i; /* index iterator */ 611 612 android_image_get_dtb_img_addr(hdr_addr, vendor_boot_img, &dtb_img_addr); 613 /* Check if DTB area of boot image is in DTBO format */ 614 if (android_dt_check_header(dtb_img_addr)) { 615 return android_dt_get_fdt_by_index(dtb_img_addr, index, addr, 616 size); 617 } 618 619 /* Find out the address of DTB with specified index in concat blobs */ 620 dtb_img_size = img_data.dtb_size; 621 i = 0; 622 dtb_addr = dtb_img_addr; 623 while (dtb_addr < dtb_img_addr + dtb_img_size) { 624 const struct fdt_header *fdt; 625 u32 dtb_size; 626 627 fdt = map_sysmem(dtb_addr, sizeof(*fdt)); 628 if (fdt_check_header(fdt) != 0) { 629 unmap_sysmem(fdt); 630 printf("Error: Invalid FDT header for index %u\n", i); 631 return false; 632 } 633 634 dtb_size = fdt_totalsize(fdt); 635 unmap_sysmem(fdt); 636 637 if (i == index) { 638 if (size) 639 *size = dtb_size; 640 if (addr) 641 *addr = dtb_addr; 642 return true; 643 } 644 645 dtb_addr += dtb_size; 646 ++i; 647 } 648 649 printf("Error: Index is out of bounds (%u/%u)\n", index, i); 650 return false; 651} 652 653#if !defined(CONFIG_SPL_BUILD) 654/** 655 * android_print_contents - prints out the contents of the Android format image 656 * @hdr: pointer to the Android format image header 657 * 658 * android_print_contents() formats a multi line Android image contents 659 * description. 660 * The routine prints out Android image properties 661 * 662 * returns: 663 * no returned results 664 */ 665void android_print_contents(const struct andr_boot_img_hdr_v0 *hdr) 666{ 667 if (hdr->header_version >= 3) { 668 printf("Content print is not supported for boot image header version > 2"); 669 return; 670 } 671 const char * const p = IMAGE_INDENT_STRING; 672 /* os_version = ver << 11 | lvl */ 673 u32 os_ver = hdr->os_version >> 11; 674 u32 os_lvl = hdr->os_version & ((1U << 11) - 1); 675 676 printf("%skernel size: %x\n", p, hdr->kernel_size); 677 printf("%skernel address: %x\n", p, hdr->kernel_addr); 678 printf("%sramdisk size: %x\n", p, hdr->ramdisk_size); 679 printf("%sramdisk address: %x\n", p, hdr->ramdisk_addr); 680 printf("%ssecond size: %x\n", p, hdr->second_size); 681 printf("%ssecond address: %x\n", p, hdr->second_addr); 682 printf("%stags address: %x\n", p, hdr->tags_addr); 683 printf("%spage size: %x\n", p, hdr->page_size); 684 /* ver = A << 14 | B << 7 | C (7 bits for each of A, B, C) 685 * lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M) */ 686 printf("%sos_version: %x (ver: %u.%u.%u, level: %u.%u)\n", 687 p, hdr->os_version, 688 (os_ver >> 7) & 0x7F, (os_ver >> 14) & 0x7F, os_ver & 0x7F, 689 (os_lvl >> 4) + 2000, os_lvl & 0x0F); 690 printf("%sname: %s\n", p, hdr->name); 691 printf("%scmdline: %s\n", p, hdr->cmdline); 692 printf("%sheader_version: %d\n", p, hdr->header_version); 693 694 if (hdr->header_version >= 1) { 695 printf("%srecovery dtbo size: %x\n", p, 696 hdr->recovery_dtbo_size); 697 printf("%srecovery dtbo offset: %llx\n", p, 698 hdr->recovery_dtbo_offset); 699 printf("%sheader size: %x\n", p, 700 hdr->header_size); 701 } 702 703 if (hdr->header_version == 2) { 704 printf("%sdtb size: %x\n", p, hdr->dtb_size); 705 printf("%sdtb addr: %llx\n", p, hdr->dtb_addr); 706 } 707} 708 709/** 710 * android_image_print_dtb_info - Print info for one DTB blob in DTB area. 711 * @fdt: DTB header 712 * @index: Number of DTB blob in DTB area. 713 * 714 * Return: true on success or false on error. 715 */ 716static bool android_image_print_dtb_info(const struct fdt_header *fdt, 717 u32 index) 718{ 719 int root_node_off; 720 u32 fdt_size; 721 const char *model; 722 const char *compatible; 723 724 root_node_off = fdt_path_offset(fdt, "/"); 725 if (root_node_off < 0) { 726 printf("Error: Root node not found\n"); 727 return false; 728 } 729 730 fdt_size = fdt_totalsize(fdt); 731 compatible = fdt_getprop(fdt, root_node_off, "compatible", 732 NULL); 733 model = fdt_getprop(fdt, root_node_off, "model", NULL); 734 735 printf(" - DTB #%u:\n", index); 736 printf(" (DTB)size = %d\n", fdt_size); 737 printf(" (DTB)model = %s\n", model ? model : "(unknown)"); 738 printf(" (DTB)compatible = %s\n", 739 compatible ? compatible : "(unknown)"); 740 741 return true; 742} 743 744/** 745 * android_image_print_dtb_contents() - Print info for DTB blobs in DTB area. 746 * @hdr_addr: Boot image header address 747 * 748 * DTB payload in Android Boot Image v2+ can be in one of following formats: 749 * 1. Concatenated DTB blobs 750 * 2. Android DTBO format (see CONFIG_CMD_ADTIMG for details) 751 * 752 * This function does next: 753 * 1. Prints out the format used in DTB area 754 * 2. Iterates over all DTB blobs in DTB area and prints out the info for 755 * each blob. 756 * 757 * Return: true on success or false on error. 758 */ 759bool android_image_print_dtb_contents(ulong hdr_addr) 760{ 761 const struct andr_boot_img_hdr_v0 *hdr; 762 bool res; 763 ulong dtb_img_addr; /* address of DTB part in boot image */ 764 u32 dtb_img_size; /* size of DTB payload in boot image */ 765 ulong dtb_addr; /* address of DTB blob with specified index */ 766 u32 i; /* index iterator */ 767 768 res = android_image_get_dtb_img_addr(hdr_addr, 0, &dtb_img_addr); 769 if (!res) 770 return false; 771 772 /* Check if DTB area of boot image is in DTBO format */ 773 if (android_dt_check_header(dtb_img_addr)) { 774 printf("## DTB area contents (DTBO format):\n"); 775 android_dt_print_contents(dtb_img_addr); 776 return true; 777 } 778 779 printf("## DTB area contents (concat format):\n"); 780 781 /* Iterate over concatenated DTB blobs */ 782 hdr = map_sysmem(hdr_addr, sizeof(*hdr)); 783 dtb_img_size = hdr->dtb_size; 784 unmap_sysmem(hdr); 785 i = 0; 786 dtb_addr = dtb_img_addr; 787 while (dtb_addr < dtb_img_addr + dtb_img_size) { 788 const struct fdt_header *fdt; 789 u32 dtb_size; 790 791 fdt = map_sysmem(dtb_addr, sizeof(*fdt)); 792 if (fdt_check_header(fdt) != 0) { 793 unmap_sysmem(fdt); 794 printf("Error: Invalid FDT header for index %u\n", i); 795 return false; 796 } 797 798 res = android_image_print_dtb_info(fdt, i); 799 if (!res) { 800 unmap_sysmem(fdt); 801 return false; 802 } 803 804 dtb_size = fdt_totalsize(fdt); 805 unmap_sysmem(fdt); 806 dtb_addr += dtb_size; 807 ++i; 808 } 809 810 return true; 811} 812#endif 813