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Re: [Qemu-devel] [PATCH 2/3] ppc64-softmmu: Remove unsupported FDC from

From: Maciej W. Rozycki
Subject: Re: [Qemu-devel] [PATCH 2/3] ppc64-softmmu: Remove unsupported FDC from config
Date: Mon, 23 Mar 2015 19:18:53 +0000 (GMT)
User-agent: Alpine 2.11 (LFD 23 2013-08-11)

On Wed, 11 Mar 2015, Alexander Graf wrote:

> > So if you know how to get working floppy disk with qemu-system-ppc64,
> > that would help me a lot in rejecting requests from libvirt folks :)
> > Thanks :)
> I don't think you want floppy disk emulation on -M pseries at all. In
> fact, you only ever want floppy disk emulation on x86. So I'd recommend
> to change the logic in libvirt accordingly and just hard code floppy
> emulation to x86 (and if alpha or some other weird architecture needs it
> later as well, have them extend the list).

 For the record: the MIPS Malta board that we support also has direct PC 
FDD support.  The real board has a SMSC FDC37M817 super I/O controller 
chip wired to Intel 82371EB (PIIX4E) south bridge's LPC interface and a 
suitable IDC header for a FDD data cable soldered onto the PCB as well.  
So it's not only x86 that can make use of floppy disk emulation.  Note 
that there's no real ISA (no slots) on the Malta board, only the LPC and 
PIIX4E on-chip stuff.


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