[Letux-kernel] Fwd: [Tinkerphones] LetuxOS for Rasi-Zero-W?

[H. Nikolaus Schaller]

Maybe someone is reading and responding here...

> Anfang der weitergeleiteten Nachricht:
> 
> Von: "H. Nikolaus Schaller" <hns at goldelico.com>
> Betreff: [Tinkerphones] LetuxOS for Rasi-Zero-W?
> Datum: 30. August 2021 um 18:42:47 MESZ
> An: Tinkerphones Community <Community at tinkerphones.org>
> Kopie: Gta04-owner at goldelico.com
> Antwort an: Tinkerphones Community <community at tinkerphones.org>
> 
> Hi,
> I am experimenting to get LetuxOS running on the
> Raspi-Zero-W. It already works on the Raspi-3B+
> for long time and basically the setup should be
> cross-compatible.
> 
> I.e. it should be possible to swap the µSD card
> between both. At least it "simply works(TM)" with
> some Raspbian µSD - but not with my LetuxOS build.
> 
> It turns out that kernel+device-tree are not
> being uncompressed and starting.
> 
> What I could not yet find out is if the mainline
> kernel generally has a problem on Raspi-Zero (and
> needs patches not upstream). Or if my build process
> needs some tweaks because the 0W has subtle
> differences to the 3B+ which manifest during kernel
> uncompress (there was something like that with
> the Letux 400 where the built-in U-Boot can't
> uncompress a modern and big uImage).
> 
> Another observation is that the device tree binaries
> are quite differently sized between Raspbian and
> the LetuxOS build - and can not be swapped.
> 
> Does anyone on this list have experience with
> building and running mainline kernels for the
> Raspi-Zero?
> 
> BR and thanks,
> Nikolaus
> 
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