linux-headers and linux-image

linux-headers and linux-image are deb packages can be installed into
Debian/Ubuntu system.

linux-headers include header files, can make the device able to
compile drivers.

linux-image includes driver modules, install them into device for
kernel to use. Besides, if device support extboot, self-building
linux-image will also include a kernel, install it will update your
device's kernel.

How to check if device is using extboot? Please see specific board's
wiki "Compile Ubuntu firmware" page, "Partial compilation" part. If
there's no extboot related content, that means it does not support
extboot.

How to get

Download from Firefly

Firefly officially provides "linux-headers" and "linux-image", which
are convenient for customers to compile drivers on the development
board. Packages provided by us include no kernel, will not update
kernel after installation, can be used in many boards.

For the package download of each board, please go to the official
Firefly

Download

 page to download. After selecting the board, click the

Download

 page, it is generally in the

Resources

 section, and the name is

linux-headers

.

Build from SDK

The version of headers and image downloaded above may mismatch your
firmware, and they are not helpful with customization needs. So build
them from SDK is recommended.

Prepare environment, get SDK and comfigure for compile, please check
the specific deivce's wiki.

Build under SDK root directory:

   # select board config
   ./build.sh xxxx.mk
   # build
   ./build.sh kerneldeb

Output files are in SDK root directory:

   linux-headers-x.xx.xxx_x.xx.xxx-xxx_arm64.deb
   linux-image-x.xx.xxx_x.xx.xxx-xxx_arm64.deb

If SDK is using extboot, then linux-image inludes kernel, so it can
only be used in specific model of boards that you select in
"./build.sh xxxx.mk".

Install

The following takes the installation of ROC-RK3568-PC as an example:

Put deb packages in device to install, for headers, you have to
compile them after installation

For device supports extboot, reboot to update kernel after installing
image, then compile headers

   # Install
   sudo dpkg -i linux-headers-4.19.172_4.19.172-189_arm64.deb
   sudo dpkg -i linux-image-4.19.172_4.19.172-189_arm64.deb

   # Prepare
   sudo apt install -y build-essential python libssl-dev

   # Compile
   cd /usr/src/linux-headers-4.19.172
   make headers_check
   make headers_install

   # make scripts may go wrong but it doesn't matter
   make scripts