On 2021-11-16 11:40:28, karl@??? wrote:
> Didier Kryn:
> > Le 16/11/2021 à 01:44, Florian Zieboll via Dng a écrit :
> > > On Mon, 15 Nov 2021 21:19:08 +0100
> ...
> > > As I use to do a minimal *.bian install on my SoC hardware, which
> > > I afterwards move to the Devuan repositories, while keeping the
> > > related original "firmware" repository, I must confess that the
> > > whole "embedded"-thing is still somewhat unclear to me, at least
> > > regarding kernel and firmware updates. I'd be more than happy to
> > > get a hint towards an honest introduction to this topic.
>
> If you are using embedded linux, you probably have an ip-connection to
> the hw and uboot as the fw/bootlooder/bios or what you prefer to call it.
> If you have an ip-connection, you can just ssh to the box and copy it to
> the right place and do whatever is needed.
> You usually don't update the processor, embedded board or other fw
> than uboot. If you want to do that you have to check the manufacturer
> documentation.
>
> ...
> >     I wish to every Linux fan to live this adventure.
>
> Ack, here is example manufacturer documentation of the process:
> http://developer.embedian.com/display/LOS/SMARC+T335X
>
> That hw is similar to the BeagleBoneBlack mentioned by Antoine,
> so if you start off the BBB, this one could be the next in your
> learning curve.

http://landley.net/aboriginal/about.html is what I used for my last
embedded Linux project.

"Aboriginal Linux is a shell script that builds the smallest/simplest
linux system capable of rebuilding itself from source code. This
currently requires seven packages: linux, busybox, uClibc, binutils, gcc,
make, and bash."

It builds a QEMU image you can boot into, and then you use the included
build system to build the rest of the stuff you need. Once done, strip
out the build tools, dd the result to something your embedded system can
boot from.

My project was for a device that needed to be audited by the government,
including providing them with something they could use to build it
themselves. Making it into a reproducible build was easy. It passed the
audit.

For all of my Devuan systems I start from minimal debootstrap install,
chroot into that, then apt install the rest.

--
A big old stinking pile of genius that no one wants
coz there are too many silver coated monkeys in the world.