RaspberryPi"

About this Howto

This documentation is about using Raspberry Pi Foundation "downstream kernel" and components on a Fedora (or CentOS) userspace. As with Fedora, this process is compatible with Raspberry Pi 2 and later model (No original Raspberry Pi or Pi Zero support is planned). Unless using a Raspberry Pi 4 with 4G of RAM. It's recommended to use the 32bit version over the 64bit (especially for the Workstation flavor). For graphics usage, it's really recommended to have a Raspberry Pi 4 which default to the vc4/v3d driver.

Kickstart files

Kickstart files are located at https://pagure.io/fork/dwrobel/fedora-kickstarts repository and are based on the original Fedora 34 files with the following modifications:

• component	Repositories	comment
  kernel	spec / copr	Downstream kernel
  bcm434xx-firmware	spec / copr
  bcm283x-firmware	spec / copr
  pykickstart	PR / copr	Adds --priority=<priority>
  livecd-tools	PR / copr	Adds support for repository 'priority' configuration

The modifications in livecd-tools and pykickstart allows to generate image with selected downstream kernel (despite it has lower version) over the upstream one. On a system, all aforementioned repositories are installed with priority=50 option to instruct 'dnf' to choose packages from this repository, rather then Fedora default.

Pre-built images

The location of pre-generated images for Fedora 34 can be found below:

Raspberry Pi specific RPM Fusion RPI Repositories on Fedora

sudo dnf config-manager --add-repo=https://mirrors.rpmfusion.org/free/fedora/rpi/rpmfusion-rpi.repo
sudo dnf install raspberrypi-vc-utils raspberrypi-vc-libs

Updating Raspberry Pi 4 bootloader EEPROM

Follow the gist available at: https://gist.github.com/dwrobel/266ad5d4e59b05ea26d8bb6725118578.

Configurations

Booting from external USB drive

Write the image to the external drive, then mount the filesystem and change root=/dev/mmcblk0p2 to root=/dev/sda2 in the /boot/efi/cmdline.txt.

Resizing filesystem

After booting the system, please consider to resize the filesystem. The following example assumes system booted from internal SD card.

sudo growpart -u on /dev/mmcblk0 2
sudo btrfs filesystem resize max /

Sysctl

# set vm.min_free_kbytes for rpi
cat>/etc/sysctl.d/98-rpi.conf<<EOF
vm.min_free_kbytes = 16384
EOF

Known issues

• There is a CMA memory allocation issue with graphics on the Pi3 using vc4, best is to disable vc4 (will be un-accelerated).

Bug Report

• You can report to our bugzilla, see ReportingBugs, please mention using downstream kernel/components.

• Downstream bugs on the kernel can be reported to https://github.com/raspberrypi/linux/

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