Project: Customizing Linux Distributions for Raspberry Pi Zero 2W

Project Structure:

• Kas
• Docker
• meta-rpi-bsp (BSP Layer)
• meta-rpi-distro (Distro Layer)
• meta-rpi-prj (Software Layer)

Build:

• Prepare KAS yml files for all layers and local configuration file
• Setup custom downloads and sstate-cache directories
• Enable build information output

Machine:

Custom machine development (Raspberrypi02w)

• Control every machine feature
• Remove kernel from going into the rootfs
• Linux kernel optimization (custom defconfig or configuration fragments
• Linux kernel device tree overlay recipe
• Linux kernel module recipe

Distribution:

Separate Yocto distribution layer development

• Custom distro configuration development (Distro.conf)
• Support for init manager (systemd)
• Optimizations (no recommended packages, full control on distro features)
• No poky
• Enable CVE checks
• Disable GPLv3 packages for all images
• Enable build information integration for all images

Image:

Control image features

• Control every package
• Create development and production images

For development:

• Enable -dev and -dbg packages

• Integrate profiling, debugging and development packages

• Disable ssh password for root user

• Add data partition (WIC/kickstart file)

OTA:

• Integrate RAUC Yocto layer
• Develop custom bundle
• Enable bundle encryption
• Enable adaptive update support
• Test RAUC update

Security: