12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182 |
- /* SPDX-License-Identifier: BSD-2-Clause */
- /*
- * This is from the Android Project,
- * Repository: https://android.googlesource.com/platform/system/core/
- * File: mkbootimg/bootimg.h
- * Commit: d162828814b08ada310846a33205befb69ef5799
- *
- * Copyright (C) 2008 The Android Open Source Project
- */
- #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];
- u32 kernel_size; /* size in bytes */
- u32 kernel_addr; /* physical load addr */
- u32 ramdisk_size; /* size in bytes */
- u32 ramdisk_addr; /* physical load addr */
- u32 second_size; /* size in bytes */
- u32 second_addr; /* physical load addr */
- u32 tags_addr; /* physical addr for kernel tags */
- u32 page_size; /* flash page size we assume */
- 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));
- /*
- * +-----------------+
- * | boot header | 1 page
- * +-----------------+
- * | kernel | n pages
- * +-----------------+
- * | ramdisk | m pages
- * +-----------------+
- * | second stage | o pages
- * +-----------------+
- *
- * n = (kernel_size + page_size - 1) / page_size
- * m = (ramdisk_size + page_size - 1) / page_size
- * o = (second_size + page_size - 1) / page_size
- *
- * 0. all entities are page_size aligned in flash
- * 1. kernel and ramdisk are required (size != 0)
- * 2. second is optional (second_size == 0 -> no second)
- * 3. load each element (kernel, ramdisk, second) at
- * the specified physical address (kernel_addr, etc)
- * 4. prepare tags at tag_addr. kernel_args[] is
- * appended to the kernel commandline in the tags.
- * 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
- * 6. if second_size != 0: jump to second_addr
- * else: jump to kernel_addr
- */
- #endif
|