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Date: Tue, 23 Apr 2013 13:38:18 +0200
From: Alexander Graf <agraf@suse.de>
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Subject: Re: [Qemu-devel] [PATCH 00/12] S390: Add virtio-ccw firmware
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To: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: qemu-devel@nongnu.org, Dominik Dingel <dingel@linux.vnet.ibm.com>

On 04/23/2013 11:20 AM, Christian Borntraeger wrote:
> 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

I agree :). This patch set is mostly to get us started on something. But 
we should have something in for 1.5, yes.

My WIP tree is at:

   git://repo.or.cz/qemu/agraf.git s390-ccw-loader 
<http://repo.or.cz/w/qemu/agraf.git/shortlog/refs/heads/s390-ccw-loader>


Alex