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From: Roman Shaposhnik <roman@shaposhnik.org>
Date: Sun, 24 May 2020 20:14:14 -0700
Message-ID: <CA+ULb+sQb78DejBGZY_vbFbubbKBik3Q9kQY5-mC5S21o32w5w@mail.gmail.com>
Subject: Re: [9front] UEFI boot on ARM / RPi
To: 9front@9front.org
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On Fri, May 22, 2020 at 3:59 AM <cinap_lenrek@felloff.net> wrote:
>
> ... not using any of this in 9boot on 386/amd64 tho. just linking
> a headerless file (-H3) hand hand crafting the PE header in the
> assembler. with 6l, i'm even just generating a a.out and stripping
> off the a.out header with dd.
>
> see /sys/src/boot/efi/pe32.s and /sys/src/boot/efi/pe64.s

Thanks! This is very helpful.

Btw, I'm trying to setup a development environment for Plan9/Pi
and it seems that I can't make my qemu-system-aarch64 emulate
enough of a UART for 9pi3 kernel to be happy. E.g.
   qemu-system-aarch64 -M raspi3 -kernel 9pi3 -append console=0
-serial mon:stdio
actually does the right thing and even brings up the GUI, but
it doesn't really seem to use the UART -- hence the console is empty.

If anybody has any hints as to where to dig to -- I'd appreciate it.

Thanks,
Roman.