Raspberry Pi "Universal" Gadget Snap
This repository contains the source for an Ubuntu Core gadget snap that runs universally on all Raspberry Pi 3 boards currently supported by Ubuntu Core (the Raspberry Pi 2B, 3B, 3A+, 3B+, 4B, Compute Module 3, and Compute Module 3+).
Building it with snapcraft will obtain various components from the bionic-updates archive, including:
- the bootloader firmware from the linux-firmware-raspi2 package
- the device-tree(s) from the linux-modules--raspi2 package
- u-boot binaries (for various models) from the u-boot-rpi package
- u-boot boot script from the flash-kernel package (classic gadgets only)
On core builds, a silent boot with a splash screen is included. The splash
screen binary comes from git://git.yoctoproject.org/psplash. Please see the
psplash/ sub directory for patches and adjustments in use.
Gadget Snaps
Gadget snaps are a special type of snaps that contain device specific support code and data. You can read more about them in the snapcraft forum: https://forum.snapcraft.io/t/the-gadget-snap/
Reporting Issues
Please report all issues here on the github page via: https://github.com/snapcore/pi-gadget/issues
Branding
This gadget snap comes with a boot splash. To change the logo you can add a new
png file to the psplash subdirectory of this tree, adjust the "SPLASH=" option
in psplash/config to point to this file and rebuild the gadget.
To turn off the splash screen completely please edit configs/core/cmdline.txt
and remove the splash and the vt.handoff=2 keywords from the default kernel
commandline.
Building
This gadget snap can optionally be cross built on an amd64 machine. To do so,
just run snapcraft with an appropriate --target-arch switch, and
--destructive-mode in the top level of the source tree after cloning it and
selecting the appropriate branch:
$ sudo snap install snapcraft --classic
$ git clone https://github.com/snapcore/pi-gadget
$ cd pi-gadget
$ git checkout 18-arm64
$ sudo snapcraft clean --destructive-mode
$ sudo snapcraft snap --target-arch=arm64 --destructive-mode
The branches included are:
- 18-arm64 - the branch for Core 18 on arm64
- 18-armhf - the branch for Core 18 on armhf
- classic - the branch for Ubuntu (universal gadget)