Re: armv6 on QEMU

[Havard Eidnes <he%NetBSD.org@localhost>]

Hi,

thanks for the recipe.

> 4) Pull a copy down of the armv7.img.gz or build the earmv7hf release.

If all you need this for, is the bootarm.efi file, you can get
that from

https://cdn.NetBSD.org/pub/NetBSD/NetBSD-9.0/evbarm-earmv7hf/installation/misc/bootarm.efi

or corresponding for the release you want to spin up.

> 6) There are a couple of ways to proceed at this point..  if you can get
> the FFS mounted from the armv7.img and rpi.img images you can create the
> needed parts from those (I was not able to do this from a amd64 box,
> BTW, but YMMV).  If that doesn't work for whatever reason, create a
> image with a MSDOS MBR on it that has a 80MB 32bit FAT and a FFS format
> 1 filesystem for the rest of the disk (newfs -O1 ....).  Don't forget to
> put a MBR on it with fdisk and make the MS-DOS filesystem active.

I managed to do this part on NetBSD/amd64 8.0 by using a vnd
device:

vnconfig -c /dev/vnd0d rpi.img
fdisk vnd0
disklabel vnd0
mount -t msdos /dev/vnd0e /mnt
...
umount /mnt
mount -t ffs /dev/vnd0a /mnt
...
umount /mnt
vnconfig -u vnd0


I do not yet have liftoff in my effort to boot an armv6 kernel
yet, though; I'm hitting a kernel assert in config_vsearch() in
subr_autoconf.c:

   KASSERT(ifattr || cfdriver_iattr_count(parent->dv_cfdriver) < 2);

fires for me.  I mistakenly built from a 9.99.92 tree, though, so
I'm reverting my tree and re-trying with 9.0.


Regards,

- Håvard