> Date: Mon, 10 Oct 2022 14:14:49 +0200
> From: Joel Carnat <j...@carnat.net>
> Le 09/10/2022 à 18:50, Mark Kettenis a écrit :
> >> Date: Sun, 9 Oct 2022 17:54:51 +0200
> >> From: Joel Carnat <j...@carnat.net>
> >>
> >> Hello,
> >>
> >> As it was referenced on the arm64 web page, I bought a Hardkernel
> >> ODROID-HC4 to run OpenBSD. The thing is, I can't boot the OpenBSD
> >> installer at all.
> >>
> >> I have successfully ran an armbian instance from the microSD card so I
> >> expect the hardware to be fully functional.
> >>
> >> I have tried using install71.img and install72.img on a microSD card but
> >> couldn't boot from it. The hardware comes with Petitboot, not with
> >> U-boot. I'm not sure whether this matters or not.
> >>
> >> Can someone who uses it explain with a bit of details how to install/run
> >> OpenBSD on this particular hardware?
> > 
> > You'll need u-boot for this machine:
> > 
> >    https://sibelius.home.xs4all.nl/firmware/odroid-hc4/u-boot.bin.sd.bin
> > 
> > Write that to an (empty) uSD-card and insert it into the uSD-card slot
> > on the board.  Press the boot switch on the bottom of the board while
> > powering it on and it should boot.  If you want to avoid having to
> > press the boot switch, you'll have to erase the SPI flash storage on
> > the board.  This can be done from u-boot, but I forgot the exact
> > commands.
> > 
> Thank you.
> After dd your image on the µSD card, I have tried booting it using the 
> bottom button but nothing happened and it went back to Petitboot prompt. 
> So I used the Petitboot commands to erase the SPI. Then tried to boot 
> again. But I just don't get any output.
> I'm using an HDMI screen if that matters. I didn't disassemble the 
> hardware to plug a serial console on it. Is U-boot limited to serial 
> console access?

Possibly; I never tried to use the HDMI output on my machine.

> Would it be possible to prepare an OpenBSD installation on the µSD card 
> using Qemu, for example, and boot the system this way?

Yes that is possible.  You first dd minirootXX.img (or installXX.img)
to the uSD card.  Then you add the firmware by doing:

dd if=u-boot.bin.sd.bin of=/dev/sdNc bs=512 skip=1 seek=1
dd if=u-boot.bin.sd.bin of=/dev/sdNc bs=1 count=444

That should result in an uSD card that boots into the OpenBSD
installer.  You should be able to install onto that same uSD card, but
you might need to repeat the dd commands above afterwards to make the
uSD card bootable again.



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