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Date: Fri, 28 Jun 2013 14:11:34 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] display: stop using DT_NOGRAPHIC,
	use DT_NONE
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To: =?UTF-8?B?QW5kcmVhcyBGw6RyYmVy?= <afaerber@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>, Anthony Liguori <aliguori@us.ibm.com>, "Todd T. Fries" <todd@fries.net>, Michael Tokarev <mjt@tls.msk.ru>, qemu-devel@nongnu.org

Il 28/06/2013 14:05, Andreas F=C3=A4rber ha scritto:
> BTW just try it out using the following to see for yourself:
>=20
> $ qemu-system-ppc -nographic
>=20
> should get you to an interactive OpenBIOS prompt. Same for sparc.
> This involves communicating to firmware that we are in -nographic mode,
> which then redirects its output to serial rather then VGA (think of
> sgabios in x86 terms).

Is this FW_CFG_NOGRAPHIC?  This is really a good usecase for making the
machine a Device, so you can control it with -global.  It can be useful
even if you do have a VGA attached.

Paolo