577e8b44b6
Also move -c to --cmdline to match the python mkbootimg tool. Remove the short options for these rarely-used options. Remove #if 0 cruft from <bootimg/bootimg.h>. Bug: http://b/77340848 Test: manual testing (need to fix http://b/77809061 for unit tests) Change-Id: Ieaa795566611bd89ba3fee39a1d9f6ad0713a587
148 lines
5 KiB
C
148 lines
5 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <stdint.h>
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#define BOOT_MAGIC "ANDROID!"
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#define BOOT_MAGIC_SIZE 8
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#define BOOT_NAME_SIZE 16
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#define BOOT_ARGS_SIZE 512
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#define BOOT_EXTRA_ARGS_SIZE 1024
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// The bootloader expects the structure of boot_img_hdr with header
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// version 0 to be as follows:
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struct boot_img_hdr_v0 {
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// Must be BOOT_MAGIC.
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uint8_t magic[BOOT_MAGIC_SIZE];
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uint32_t kernel_size; /* size in bytes */
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uint32_t kernel_addr; /* physical load addr */
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uint32_t ramdisk_size; /* size in bytes */
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uint32_t ramdisk_addr; /* physical load addr */
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uint32_t second_size; /* size in bytes */
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uint32_t second_addr; /* physical load addr */
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uint32_t tags_addr; /* physical addr for kernel tags */
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uint32_t page_size; /* flash page size we assume */
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// Version of the boot image header.
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uint32_t 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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uint32_t os_version;
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#if __cplusplus
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void SetOsVersion(unsigned major, unsigned minor, unsigned patch) {
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os_version &= ((1 << 11) - 1);
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os_version |= (((major & 0x7f) << 25) | ((minor & 0x7f) << 18) | ((patch & 0x7f) << 11));
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}
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void SetOsPatchLevel(unsigned year, unsigned month) {
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os_version &= ~((1 << 11) - 1);
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os_version |= (((year - 2000) & 0x7f) << 4) | ((month & 0xf) << 0);
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}
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#endif
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uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */
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uint8_t cmdline[BOOT_ARGS_SIZE];
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uint32_t 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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uint8_t extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
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} __attribute__((packed));
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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 boot_img_hdr_v0 boot_img_hdr;
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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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struct boot_img_hdr_v1 : public boot_img_hdr_v0 {
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uint32_t recovery_dtbo_size; /* size in bytes for recovery DTBO image */
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uint64_t recovery_dtbo_offset; /* physical load addr */
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uint32_t header_size;
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} __attribute__((packed));
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/* When the boot image header has a version of 1, 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 | p 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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*
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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. recovery_dtbo is required for recovery.img in non-A/B 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, recovery_dtbo) at
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* the specified physical address (kernel_addr, etc)
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* 5. prepare tags at tag_addr. kernel_args[] is
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* appended to the kernel commandline in the tags.
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* 6. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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* 7. 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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