Add Hailo8 support on pi5 machines

[shaunmulligan]

⚠️ Warning: ⚠️ Before merging, we need to confirm that our including the firmware in balenaOS conforms to hailo's License

This PR introduces support for the hailo8 chip found in the raspberry pi AI Kits on the raspberrypi5 family of machines by adding the following components:

• A new recipe for hailo firmware (hailo-firmware_4.19.0.bb) that installs the firmware binary to /lib/firmware/hailo.
• an extra udev rule (51-hailo-udev.rules) has been added to the extra-udev-rules.bbappend file to support the new hardware.

It depends on #1201 being merged to support kernel 6.6 on the pi5 first.

This can be tested from a container/app using the following dockerfile:

FROM balenalib/raspberrypi5-debian:bookworm-build

WORKDIR /root

# Install generic requirements
RUN install_packages software-properties-common wget

# Need to create a sources.list file for apt-add-repository to work correctly:
# https://groups.google.com/g/linux.debian.bugs.dist/c/6gM_eBs4LgE
RUN echo "# See sources.lists.d directory" > /etc/apt/sources.list

# Add Raspberry Pi repository, as this is where we will get the Hailo deb packages
RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 82B129927FA3303E && \
    apt-add-repository -y -S deb http://archive.raspberrypi.com/debian/ bookworm main

# Fake systemd so hailoRT will install in container:
RUN echo '#!/bin/sh\nexec "$@"' > /usr/bin/sudo && chmod +x /usr/bin/sudo
RUN echo '#!/bin/bash\nexit 0' > /usr/bin/systemctl && chmod +x /usr/bin/systemctl
RUN mkdir -p /run/systemd && echo 'docker' > /run/systemd/container

# Dependencies for hailo
RUN install_packages hailo-all

CMD [ "balena-idle" ]

You should then be able to run hailortcli scan from within the container and have the device correctly detected.

[n1mda]

Hi balena-os developers, very cool to see this is worked on!

Just a comment, hailo 4.20.0 is available. Is there a reason you use 4.19.0 here?

Looking forward to using this!

[shaunmulligan]

Hi @n1mda yeah, I saw that 4.20 is available but planned to try align the version to what is officially shipped with raspberry Pi OS currently which today ships with 4.19.0, which means that installing this in your docker container doesn't require building the userspace libs from source, its just a matter of doing apt install hailo-all