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Date: Wed, 16 May 2012 19:40:28 +0300
From: Gleb Natapov <gleb@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH 2/2] Get system state configuration from
 QEMU and patcth DSDT with it.
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Kevin O'Connor <kevin@koconnor.net>, seabios@seabios.org, qemu-devel@nongnu.org

On Wed, May 16, 2012 at 05:50:31PM +0200, Paolo Bonzini wrote:
> Il 16/05/2012 15:46, Gleb Natapov ha scritto:
> > I saw that, but I don't get why doing it this way instead of defining
> > the object in AML and patching it? I can define Name(S4VL, 0x2) and path
> > 0x2 to whatever QEMU wants me to use, or I can patch Package directly
> > like I did.
> > 
> 
> Can we build an SSDT that includes the contents of fw_cfg (e.g.
> FW_CFG_SIGNATURE at offset 0, FW_CFG_UUID at offset 4, FW_CFG_NOGRAPHIC
> at offset 16... the entry <-> offset mapping and the defaults would be
> part of SeaBIOS), and then read that data from normal DSDT methods?
Kevin does not want to use offsets any more :) He wants to use files, so
this will not work for new entries.

> 
> That would be similar to Gerd's patch, but without letting the OSPM use
> the real fw_cfg device.
> 
Latest Gerd's patch does not use fw_cfg device. It creates AML code
manually, I am saying we can do the same by patching, but the end result
will be the same.

--
			Gleb.