Buildroot for Radxa Zero?

#1

I’m searching for _defconfig and /board files for Radxa Zero for making boot time as minimal as possible. Any help would be appreciate.

#2

I think you are asking for help at wrong place. Try here:
https://bootlin.com/training/buildroot/
https://elinux.org/Experts

#3

Why do you think so? Giving unuseful links to the people and guiding them down the wrong path is a very unprofessional activity and you should be banned for that. Please be kind and respect other users :wink:

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#4

Why do you ask questions if you know the path?

This is forum if you forget about. Be happy for hints … nobody will do your homework instead of you.

#5

Calm down Igor. I think he is joking.

#6

I haven’t seen anyone working directly with buildroot, but the LibreELEC kernel defconfig could be useful as a starting point:

The LE defconfig contains @@VARIABLES@@ that we sed at compile time, but those are easy to spot and it already removes a lot of the modules that are not really needed for a portable device like the Zero and I see kernel + userspace boot times around 7-8 secs. Boot can be made faster with less modules built-in (more =m) but this will sometimes expose timing issues and I value reliability of boot more than speed.

Also useful is the meta-meson Yocto overlay; this describes the minimum modules needed for Amlogic support in Yocto (applied as an overlay on an existing defconfig):

The links @igorp provided are worth looking at too; Bootlin runs trainings and does regular talks at Linux community events (ELC, Kernel-Recipes, etc.) on boot time kernel optimisation.

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#9

Folks let’s keep focusing on the technical stuff and not attacking each other.