mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-01 05:55:26 +00:00
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
|
/* tools/mkbootimg/bootimg.h
|
||
|
|
**
|
||
|
|
** Copyright 2007, The Android Open Source Project
|
||
|
|
**
|
||
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
** you may not use this file except in compliance with the License.
|
||
|
|
** You may obtain a copy of the License at
|
||
|
|
**
|
||
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
**
|
||
|
|
** Unless required by applicable law or agreed to in writing, software
|
||
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
** See the License for the specific language governing permissions and
|
||
|
|
** limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#ifndef _BOOT_IMAGE_H_
|
||
|
|
#define _BOOT_IMAGE_H_
|
||
|
|
|
||
|
|
typedef struct boot_img_hdr boot_img_hdr;
|
||
|
|
|
||
|
|
#define BOOT_MAGIC "ANDROID!"
|
||
|
|
#define BOOT_MAGIC_SIZE 8
|
||
|
|
#define BOOT_NAME_SIZE 16
|
||
|
|
#define BOOT_ARGS_SIZE 512
|
||
|
|
#define BOOT_EXTRA_ARGS_SIZE 1024
|
||
|
|
|
||
|
|
struct boot_img_hdr
|
||
|
|
{
|
||
|
|
uint8_t magic[BOOT_MAGIC_SIZE];
|
||
|
|
|
||
|
|
uint32_t kernel_size; /* size in bytes */
|
||
|
|
uint32_t kernel_addr; /* physical load addr */
|
||
|
|
|
||
|
|
uint32_t ramdisk_size; /* size in bytes */
|
||
|
|
uint32_t ramdisk_addr; /* physical load addr */
|
||
|
|
|
||
|
|
uint32_t second_size; /* size in bytes */
|
||
|
|
uint32_t second_addr; /* physical load addr */
|
||
|
|
|
||
|
|
uint32_t tags_addr; /* physical addr for kernel tags */
|
||
|
|
uint32_t page_size; /* flash page size we assume */
|
||
|
|
uint32_t unused[2]; /* future expansion: should be 0 */
|
||
|
|
|
||
|
|
uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */
|
||
|
|
|
||
|
|
uint8_t cmdline[BOOT_ARGS_SIZE];
|
||
|
|
|
||
|
|
uint32_t id[8]; /* timestamp / checksum / sha1 / etc */
|
||
|
|
|
||
|
|
/* Supplemental command line data; kept here to maintain
|
||
|
|
* binary compatibility with older versions of mkbootimg */
|
||
|
|
uint8_t extra_cmdline[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
|
||
|
|
*/
|
||
|
|
|
||
|
|
int extract(char *image);
|
||
|
|
int repack(char *image);
|
||
|
|
int hexpatch(char *image, char *from, char *to);
|
||
|
|
|
||
|
|
#endif
|