0b6febfdb3
This takes the latest changes from AOSP from the file include/bootimg/bootimg.h from the repository: https://android.googlesource.com/platform/system/tools/mkbootimg and update the U-Boot version with the latest changes. This file keeps the changes from AOSP to a minimum: * Comments were converted from C++ to C style. * Code inside __cplusplus #ifdef blocks were removed. * C++11 struct extensions replaced with a single struct. Signed-off-by: Alex Deymo <deymo@google.com> Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
143 lines
4.8 KiB
C
143 lines
4.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* This is from the Android Project,
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* Repository: https://android.googlesource.com/platform/system/tools/mkbootimg
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* File: include/bootimg/bootimg.h
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* Commit: e55998a0f2b61b685d5eb4a486ca3a0c680b1a2f
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*
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* Copyright (C) 2007 The Android Open Source Project
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*/
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#ifndef _ANDROID_IMAGE_H_
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#define _ANDROID_IMAGE_H_
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#define ANDR_BOOT_MAGIC "ANDROID!"
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#define ANDR_BOOT_MAGIC_SIZE 8
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#define ANDR_BOOT_NAME_SIZE 16
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#define ANDR_BOOT_ARGS_SIZE 512
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#define ANDR_BOOT_EXTRA_ARGS_SIZE 1024
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/*
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* It is expected that callers would explicitly specify which version of the
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* boot image header they need to use.
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*/
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typedef struct andr_img_hdr andr_img_hdr;
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/* The bootloader expects the structure of andr_img_hdr with header
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* version 0 to be as follows: */
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struct andr_img_hdr {
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/* Must be ANDR_BOOT_MAGIC. */
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char magic[ANDR_BOOT_MAGIC_SIZE];
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u32 kernel_size; /* size in bytes */
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u32 kernel_addr; /* physical load addr */
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u32 ramdisk_size; /* size in bytes */
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u32 ramdisk_addr; /* physical load addr */
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u32 second_size; /* size in bytes */
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u32 second_addr; /* physical load addr */
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u32 tags_addr; /* physical addr for kernel tags */
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u32 page_size; /* flash page size we assume */
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/* Version of the boot image header. */
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u32 header_version;
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/* Operating system version and security patch level.
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* For version "A.B.C" and patch level "Y-M-D":
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* (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)
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* os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0] */
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u32 os_version;
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char name[ANDR_BOOT_NAME_SIZE]; /* asciiz product name */
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char cmdline[ANDR_BOOT_ARGS_SIZE];
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u32 id[8]; /* timestamp / checksum / sha1 / etc */
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/* Supplemental command line data; kept here to maintain
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* binary compatibility with older versions of mkbootimg. */
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char extra_cmdline[ANDR_BOOT_EXTRA_ARGS_SIZE];
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/* Fields in boot_img_hdr_v1 and newer. */
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u32 recovery_dtbo_size; /* size in bytes for recovery DTBO/ACPIO image */
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u64 recovery_dtbo_offset; /* offset to recovery dtbo/acpio in boot image */
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u32 header_size;
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/* Fields in boot_img_hdr_v2 and newer. */
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u32 dtb_size; /* size in bytes for DTB image */
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u64 dtb_addr; /* physical load address for DTB image */
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} __attribute__((packed));
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/* When a boot header is of version 0, the structure of boot image is as
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* follows:
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*
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* +-----------------+
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* | boot header | 1 page
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* +-----------------+
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* | kernel | n pages
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* +-----------------+
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* | ramdisk | m pages
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* +-----------------+
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* | second stage | o pages
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* +-----------------+
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*
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* n = (kernel_size + page_size - 1) / page_size
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* m = (ramdisk_size + page_size - 1) / page_size
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* o = (second_size + page_size - 1) / page_size
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*
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* 0. all entities are page_size aligned in flash
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* 1. kernel and ramdisk are required (size != 0)
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* 2. second is optional (second_size == 0 -> no second)
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* 3. load each element (kernel, ramdisk, second) at
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* the specified physical address (kernel_addr, etc)
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* 4. prepare tags at tag_addr. kernel_args[] is
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* appended to the kernel commandline in the tags.
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* 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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* 6. if second_size != 0: jump to second_addr
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* else: jump to kernel_addr
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*/
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/* When the boot image header has a version of 2, the structure of the boot
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* image is as follows:
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*
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* +---------------------+
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* | boot header | 1 page
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* +---------------------+
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* | kernel | n pages
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* +---------------------+
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* | ramdisk | m pages
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* +---------------------+
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* | second stage | o pages
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* +---------------------+
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* | recovery dtbo/acpio | p pages
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* +---------------------+
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* | dtb | q pages
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* +---------------------+
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* n = (kernel_size + page_size - 1) / page_size
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* m = (ramdisk_size + page_size - 1) / page_size
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* o = (second_size + page_size - 1) / page_size
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* p = (recovery_dtbo_size + page_size - 1) / page_size
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* q = (dtb_size + page_size - 1) / page_size
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*
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* 0. all entities are page_size aligned in flash
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* 1. kernel, ramdisk and DTB are required (size != 0)
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* 2. recovery_dtbo/recovery_acpio is required for recovery.img in non-A/B
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* devices(recovery_dtbo_size != 0)
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* 3. second is optional (second_size == 0 -> no second)
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* 4. load each element (kernel, ramdisk, second, dtb) at
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* the specified physical address (kernel_addr, etc)
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* 5. If booting to recovery mode in a non-A/B device, extract recovery
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* dtbo/acpio and apply the correct set of overlays on the base device tree
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* depending on the hardware/product revision.
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* 6. prepare tags at tag_addr. kernel_args[] is
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* appended to the kernel commandline in the tags.
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* 7. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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* 8. if second_size != 0: jump to second_addr
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* else: jump to kernel_addr
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*/
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#endif
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