diff options
| -rw-r--r-- | common/image-android.c | 9 | ||||
| -rw-r--r-- | include/android_image.h | 24 |
2 files changed, 28 insertions, 5 deletions
diff --git a/common/image-android.c b/common/image-android.c index ee03b96..c668407 100644 --- a/common/image-android.c +++ b/common/image-android.c @@ -161,6 +161,9 @@ int android_image_get_ramdisk(const struct andr_img_hdr *hdr, void android_print_contents(const struct andr_img_hdr *hdr) { const char * const p = IMAGE_INDENT_STRING; + /* os_version = ver << 11 | lvl */ + u32 os_ver = hdr->os_version >> 11; + u32 os_lvl = hdr->os_version & ((1U << 11) - 1); printf("%skernel size: %x\n", p, hdr->kernel_size); printf("%skernel address: %x\n", p, hdr->kernel_addr); @@ -170,6 +173,12 @@ void android_print_contents(const struct andr_img_hdr *hdr) printf("%ssecond address: %x\n", p, hdr->second_addr); printf("%stags address: %x\n", p, hdr->tags_addr); printf("%spage size: %x\n", p, hdr->page_size); + /* ver = A << 14 | B << 7 | C (7 bits for each of A, B, C) + * lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M) */ + printf("%sos_version: %x (ver: %u.%u.%u, level: %u.%u)\n", + p, hdr->os_version, + (os_ver >> 7) & 0x7F, (os_ver >> 14) & 0x7F, os_ver & 0x7F, + (os_lvl >> 4) + 2000, os_lvl & 0x0F); printf("%sname: %s\n", p, hdr->name); printf("%scmdline: %s\n", p, hdr->cmdline); } diff --git a/include/android_image.h b/include/android_image.h index 094d60a..dfd4d9d 100644 --- a/include/android_image.h +++ b/include/android_image.h @@ -1,8 +1,8 @@ /* * This is from the Android Project, - * Repository: https://android.googlesource.com/platform/bootable/bootloader/legacy - * File: include/boot/bootimg.h - * Commit: 4205b865141ff2e255fe1d3bd16de18e217ef06a + * Repository: https://android.googlesource.com/platform/system/core/ + * File: mkbootimg/bootimg.h + * Commit: d162828814b08ada310846a33205befb69ef5799 * * Copyright (C) 2008 The Android Open Source Project * @@ -12,10 +12,13 @@ #ifndef _ANDROID_IMAGE_H_ #define _ANDROID_IMAGE_H_ +typedef struct andr_img_hdr andr_img_hdr; + #define ANDR_BOOT_MAGIC "ANDROID!" #define ANDR_BOOT_MAGIC_SIZE 8 #define ANDR_BOOT_NAME_SIZE 16 #define ANDR_BOOT_ARGS_SIZE 512 +#define ANDR_BOOT_EXTRA_ARGS_SIZE 1024 struct andr_img_hdr { char magic[ANDR_BOOT_MAGIC_SIZE]; @@ -31,14 +34,25 @@ struct andr_img_hdr { u32 tags_addr; /* physical addr for kernel tags */ u32 page_size; /* flash page size we assume */ - u32 unused[2]; /* future expansion: should be 0 */ + u32 unused; /* reserved for future expansion: MUST be 0 */ + + /* operating system version and security patch level; for + * version "A.B.C" and patch level "Y-M-D": + * ver = A << 14 | B << 7 | C (7 bits for each of A, B, C) + * lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M) + * os_version = ver << 11 | lvl */ + u32 os_version; char name[ANDR_BOOT_NAME_SIZE]; /* asciiz product name */ char cmdline[ANDR_BOOT_ARGS_SIZE]; u32 id[8]; /* timestamp / checksum / sha1 / etc */ -}; + + /* Supplemental command line data; kept here to maintain + * binary compatibility with older versions of mkbootimg */ + char extra_cmdline[ANDR_BOOT_EXTRA_ARGS_SIZE]; +} __attribute__((packed)); /* * +-----------------+ |