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Re: RISCV porting effort

From: Efraim Flashner
Subject: Re: RISCV porting effort
Date: Tue, 15 Jun 2021 15:37:25 +0300

On Mon, Jun 14, 2021 at 06:00:21PM -0700, Vagrant Cascadian wrote:
> On 2021-06-14, Efraim Flashner wrote:
> > On Sun, Jun 13, 2021 at 10:24:13AM -0700, Vagrant Cascadian wrote:
> >> On 2021-06-07, Efraim Flashner wrote:
> >> > Last week my HiFive Umatched¹ board came
> >> ...
> >> > Ubuntu has an image for the board² which booted up just fine and I'm
> >> > using, since I didn't want to spend too long getting Debian to run on
> >> > the board.
> >> 
> >> I, on the other hand, went straight for Debian, of course! I stole the
> >> vendor kernel and u-boot and built a Debian rootfs... and after a few
> >> tries got it running.
> >> 
> >> live well,
> >>   vagrant
> >
> > Do you have notes on what you did? Right now I was thinking of taking
> > the Ubuntu image, keeping /boot with their kernel and u-boot and
> > replacing the rest of it with Debian. (And copying the device-tree dtb
> > files to /boot/firmware/kernel-version)
> I didn't take notes, but off the top of my head something like this:
>   Booted the OE image that shipped with it on the microSD
>   add partition for new rootfs (cfdisk /dev/mmcblk?)

Not a bad idea. I tried flashing a new SD card with their 2021.05 image
but it gave me kernel panics over the serial console so I reflashed it
with 2021.03. Actually, after flashing it I deleted everything in
/dev/sda4 and did debootstrap there and left extlinux setup as-is.

>   mkfs.ext4 /dev/mmcblkXpY
>   mount -o noatime /dev/mmcblkXpY /mnt
>   git clone
>   cd deboostrap
>   sudo DEBOOTSTRAP_DIR=$(pwd) ./deboostrap --arch=riscv64 sid /mnt 

I added --include=openssh-server,sudo

>   echo 'UUID=...  / ext4 errors=remount-ro 0 1' > /mnt/etc/fstab
>   echo 'tmpfs /tmp tmpfs defaults,nosuid,nodev 0 0' >> /mnt/etc/fstab
>   sudo chroot /mnt adduser vagrant --gecos ,,,
>   sudo chroot /mnt adduser vagrant sudo
>   sudo chroot /mnt passwd vagrant
>   add another entry to /boot/extlinux/extlinux.conf using the
>   appropriate root=/dev/mmcblkXpY and/or root=UUID=...
> Probably missed something, but that's the jist.

You forgot to mention what password you used ;P jkjk

echo "unmatched" > /etc/hostname
cat >>/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

> Then, to build guix...
>   git clone
>   cd guix
>   git remote add originguix
>   git fetch
>   git format-patch -o debian/patches originguix/master..originguix/wip-riscv
>   # add new patches to debian/patches/series
>   # adjust debian/rules and debian/control to use guile-3.0...
>   # build the package!
>   DEB_BUILD_OPTIONS='nocheck parallel=5' sbuild --chroot-mode=unshare -d 
> UNRELEASED -c sid 
> Upgrading to use guile-3.0 required a manually rebuilt guile-gnutls
> against guile-3.0 as well...
> Just pushed debian/wip-riscv64 to
> if you want to look at my most recent attempt.
> Notably, this is just the wip-riscv patches applied against guix 1.3.0;
> maybe building against guix master will be more successful?
> live well,
>   vagrant

I'm actually thinking of moving my reprepro setup off my g4 and hosting
it on my desktop (where I can get my gpg key more easily) and then
rsyncing it up to my server. If I setup pbuilder on the hifive unmatched
then I'll add those packages to the ones I already have online.

Efraim Flashner   <>   אפרים פלשנר
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