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From: | Paul Brook |
Subject: | Re: [Qemu-devel] [PATCH - V3] Port codes from qemu-kvm to support booting from SCSI disk image |
Date: | Wed, 18 Aug 2010 17:04:26 +0100 |
User-agent: | KMail/1.13.5 (Linux/2.6.35-trunk-amd64; KDE/4.4.5; x86_64; ; ) |
> > Couldn't we just have an option rom for the SCSI controller? The same way > > the VGABIOS is a rewrite of a VGA BIOS for the Cirrus Logic... > > Of course we could, but it should not be extboot, but proper scsi driver. > gpxe has src/drivers/block/scsi.c so may be it already supports qemu scsi > device? IIRC it only supports iSCSI. You'd need to add the LSI HBA driver and possibly parallel SCSI transport bits. In practice I'd imagine the SCSI parts to be pretty straightforward. A bios driver can ignore most of the fancy bits (e.g. TCQ) that a full featured OS driver has to worry about. Paul
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