Re: [Qemu-devel] [PATCH 00/12] S390: Add virtio-ccw firmware

[Christian Borntraeger]

On 22/04/13 21:18, Alexander Graf wrote:
> We used to be able to boot from the virtio-s390 machine using a
> modified version of zipl. However, for our new virtio-ccw machine,
> there was not such support available.
> 
> This patch set adds a tiny but of firmware to the game, so that we
> get the same functionality back that we used to have on virtio-s390.
> 
> It should live in the QEMU tree, so that we can easily extend it
> to support more fancy features, like asking the user to choose which
> entry to boot, or boot menus.
> 
> Alex

Thanks.
In general this seems to work for scsi disks or image files that contain
a scsi bootmap. There are several things that we should fix or extend, though:
- disabled wait
- make cio better
- pass a device id
- loadparm
- dasd bootmap (which is not architectured, but pretty similar to the scsi one)

Can you provide a qemu tree so that we can help to fix/extend this? 
I think this should go into 1.5, lets see how much we can improve this before 
the
hard freeze

Christian