mirror of
https://github.com/anestisb/android-unpackbootimg.git
synced 2024-11-13 13:19:20 +00:00
113 lines
3.4 KiB
C
113 lines
3.4 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 dt_size; /* device tree in bytes */
|
|
|
|
/* 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 */
|
|
uint32_t os_version;
|
|
|
|
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
|
|
** +-----------------+
|
|
** | device tree | p 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
|
|
** p = (dt_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
|
|
*/
|
|
|
|
#if 0
|
|
typedef struct ptentry ptentry;
|
|
struct ptentry {
|
|
char name[16]; /* asciiz partition name */
|
|
unsigned start; /* starting block number */
|
|
unsigned length; /* length in blocks */
|
|
unsigned flags; /* set to zero */
|
|
};
|
|
/* MSM Partition Table ATAG
|
|
**
|
|
** length: 2 + 7 * n
|
|
** atag: 0x4d534d70
|
|
** <ptentry> x n
|
|
*/
|
|
#endif
|
|
|
|
#endif
|