[U-Boot] [PATCH v2 1/4] ARM: qemu-arm: Add support for AArch64

[Jonathan Gray <jsg@jsg.id.au>]

On Sat, Jan 13, 2018 at 02:45:32PM +0200, Tuomas Tynkkynen wrote:
> Hi Jonathan,
> 
> On 01/13/2018 09:08 AM, Jonathan Gray wrote:
> > On Thu, Jan 11, 2018 at 04:11:23PM +0200, Tuomas Tynkkynen wrote:
> > > This adds support for '-machine virt' on AArch64. This is rather simple:
> > > we just add TARGET_QEMU_ARM_xxBIT to select a few different Kconfig
> > > symbols, provide the ARMv8 memory map from the board file and add a new
> > > defconfig based on the 32-bit defconfig.
> > 
> > While nvme is in the defconfig it seems only ahci works with
> > distroboot automatically.
> > 
> > Booting off nvme requires manually running
> > 
> > => nvme scan
> > => setenv devtype nvme
> > => run scan_dev_for_boot_part
> > 
> > Having it work automatically requires something like the below
> > 
> 
> Yeah. You should probably send that as a formal patch (or two I guess;
> one for config_distro_bootcmd.h; one for qemu-arm.h).
> 
> FWIW, I have a mostly-working virtio stack for U-Boot which probably
> would be the best disk interface for booting Linux. Still needs a
> lot of cleanup, hopefully one day it will be ready...

That would be great.  I'm interested in running OpenBSD not Linux and
ahci cant't map the interrupt with qemu (does on pci ecam + ahci on an
overdrive 1000), and nvme turns out to hang when mounting the root
filesystem.

Would be nice to be able to replace using edk2 ovmf for booting off
virtio storage.