abootcrafter

abootcrafter

abootcrafter is a Rust-based tool designed to manipulate android boot images like a real blacksmith. It allows you to display information about boot images, extract their components, update existing boot images, or create new ones based on provided configurations and files.

Features

• Info: Display detailed information about a boot image, including kernel, ramdisk, and second stage sizes, along with configuration details.
• Extract: Extract the kernel, ramdisk, and second stage from a boot image into separate files.
• Update: Update an existing boot image by replacing components (kernel, ramdisk, second stage) and modifying configuration settings.
• Create: Create a new boot image from provided kernel and ramdisk files, with optional second stage and configuration settings.

Installation

Archives of precompiled binaries for abootcrafter are available for Windows, macOS, Linux and Android. Linux, Android and Windows binaries are static executables.

abootcrafter can also be installed with cargo.

$ cargo install abootcrafter

Alternatively, one can use cargo binstall to install a abootcrafter binary directly from GitHub:

$ cargo binstall abootcrafter

Usage

Display Information about a Boot Image

abootcrafter info bootimg --input-boot-file <INPUT_BOOT_FILE>

• --input-boot-file or -i: Path to the input boot image file.

Extract Components from a Boot Image

abootcrafter extract bootimg --input-boot-file <INPUT_BOOT_FILE> --output-dir <OUTPUT_DIR>

• --input-boot-file or -i: Path to the input boot image file.
• --output-dir or -o: (Optional) Directory where the extracted components will be saved. If not specified, the components will be extracted to a default directory.

Update an Existing Boot Image

abootcrafter update bootimg --input-boot-file <INPUT_BOOT_FILE> [OPTIONS]

• --input-boot-file or -i: Path to the input boot image file.
• --kernel-file or -k: (Optional) Path to a new kernel image file.
• --ramdisk-file or -r: (Optional) Path to a new ramdisk image file.
• --second-file or -s: (Optional) Path to a new second stage image file.
• --recovery-dtbo-file: (Optional) Path to a new recovery DTBO image file (v1 to v2 only).
• --dtb-file: (Optional) Path to a new DTB image file (v2 only).
• --cmdline: (Optional) New command line parameters.
• --extra-cmdline: (Optional) Extra command line parameters.

Create a New Boot Image

Version 0 (< Android 9)

abootcrafter create bootimg-v0 --output-boot-file <OUTPUT_BOOT_FILE> --kernel-file <KERNEL_FILE> --ramdisk-file <RAMDISK_FILE> [OPTIONS]

• --output-boot-file or -o: Output boot image file.
• --kernel-file or -k: Kernel file to use for creating the boot image.
• --ramdisk-file or -r: Ramdisk file to use for creating the boot image.
• --second-file or -s: (Optional) Second file to use for creating the boot image.
• --page-size: (Optional) Page size to use for creating the boot image [default: 2048] [possible values: 2048, 4096, 8192, 16384].
• --kernel-addr: (Optional) Physical load address of the kernel [default: 0x00008000].
• --ramdisk-addr: (Optional) Physical load address of the ramdisk [default: 0x01000000].
• --second-addr: (Optional) Physical load address of the second [default: 0x00000000].
• --tags-addr: (Optional) Physical load address of the tags [default: 0x00000100].
• --os-version: (Optional) Android OS Version of the boot image [default: ].
• --name: (Optional) Product name of the boot image [default: ].
• --cmdline: (Optional) Kernel command line of the boot image [default: ].
• --id: (Optional) timestamp / checksum / sha1 / etc [default: ].
• --extra-cmdline: (Optional) Extra kernel command line of the boot image [default: ].

Version 1 (== Android 9)

abootcrafter create bootimg-v1 --output-boot-file <OUTPUT_BOOT_FILE> --kernel-file <KERNEL_FILE> --ramdisk-file <RAMDISK_FILE> [OPTIONS]

• --output-boot-file or -o: Output boot image file.
• --kernel-file or -k: Kernel file to use for creating the boot image.
• --ramdisk-file or -r: Ramdisk file to use for creating the boot image.
• --second-file or -s: (Optional) Second file to use for creating the boot image.
• --recovery-dtbo-file or -D: (Optional) Recovery DTBO file to use for creating the boot image.
• --page-size: (Optional) Page size to use for creating the boot image [default: 2048] [possible values: 2048, 4096, 8192, 16384].
• --kernel-addr: (Optional) Physical load address of the kernel [default: 0x00008000].
• --ramdisk-addr: (Optional) Physical load address of the ramdisk [default: 0x01000000].
• --second-addr: (Optional) Physical load address of the second [default: 0x00000000].
• --tags-addr: (Optional) Physical load address of the tags [default: 0x00000100].
• --os-version: (Optional) Android OS Version of the boot image [default: ].
• --name: (Optional) Product name of the boot image [default: ].
• --cmdline: (Optional) Kernel command line of the boot image [default: ].
• --id: (Optional) timestamp / checksum / sha1 / etc [default: ].
• --extra-cmdline: (Optional) Extra kernel command line of the boot image [default: ].
• --recovery-dtbo-offset: (Optional) Offset of the recovery DTBO partition [default: 0x0000000000000000].

Version 2 (== Android 10)

abootcrafter create bootimg-v2 --output-boot-file <OUTPUT_BOOT_FILE> --kernel-file <KERNEL_FILE> --ramdisk-file <RAMDISK_FILE> [OPTIONS]

• --output-boot-file or -o: Output boot image file.
• --kernel-file or -k: Kernel file to use for creating the boot image.
• --ramdisk-file or -r: Ramdisk file to use for creating the boot image.
• --second-file or -s: (Optional) Second file to use for creating the boot image.
• --recovery-dtbo-file or -D: (Optional) Recovery DTBO file to use for creating the boot image.
• --dtb-file or -d: (Optional) Device tree file to use for creating the boot image.
• --page-size: (Optional) Page size to use for creating the boot image [default: 2048] [possible values: 2048, 4096, 8192, 16384].
• --kernel-addr: (Optional) Physical load address of the kernel [default: 0x00008000].
• --ramdisk-addr: (Optional) Physical load address of the ramdisk [default: 0x01000000].
• --second-addr: (Optional) Physical load address of the second [default: 0x00000000].
• --tags-addr: (Optional) Physical load address of the tags [default: 0x00000100].
• --os-version: (Optional) Android OS Version of the boot image [default: ].
• --name: (Optional) Product name of the boot image [default: ].
• --cmdline: (Optional) Kernel command line of the boot image [default: ].
• --id: (Optional) timestamp / checksum / sha1 / etc [default: ].
• --extra-cmdline: (Optional) Extra kernel command line of the boot image [default: ].
• --recovery-dtbo-offset: (Optional) Offset of the recovery DTBO partition [default: 0x0000000000000000].
• --dtb-addr: (Optional) Physical load address of the device tree [default: 0x0000000000000000].

Version 3 (>= Android 11)

abootcrafter create bootimg-v3 --output-boot-file <OUTPUT_BOOT_FILE> --kernel-file <KERNEL_FILE> --ramdisk-file <RAMDISK_FILE> [OPTIONS]

• --output-boot-file or -o: Output boot image file.
• --kernel-file or -k: Kernel file to use for creating the boot image.
• --ramdisk-file or -r: Ramdisk file to use for creating the boot image.
• --os-version: (Optional) Android OS Version of the boot image [default: ].
• --cmdline: (Optional) Kernel command line of the boot image [default: ].

Version 4 (>= Android 12)

abootcrafter create bootimg-v4 --output-boot-file <OUTPUT_BOOT_FILE> --kernel-file <KERNEL_FILE> --ramdisk-file <RAMDISK_FILE> [OPTIONS]

• --output-boot-file or -o: Output boot image file.
• --kernel-file or -k: Kernel file to use for creating the boot image.
• --ramdisk-file or -r: Ramdisk file to use for creating the boot image.
• --os-version: (Optional) Android OS Version of the boot image [default: ].
• --cmdline: (Optional) Kernel command line of the boot image [default: ].

Roadmap

• Add support for all boot image headers
• Add ramdisk subcommands (info, recompress (in-place), unpack, repack, addfile?, removefile?, etc)
• Add device tree subcommands (info, remove, add, replace)
• Add signature subcommands (info, remove, replace, generate)
• Add kernel subcomands (info, extract-config)

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Contributing

Contributions are welcome! Please feel free to open issues or pull requests to improve this tool.

Authors

• Andrew Gigena