linux-kernel - Re: [PATCH] x86/efi: Add EFI framebuffer earlyprintk support

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Date:	Thu, 10 Oct 2013 18:58:28 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Peter Jones <pjones@...hat.com>,
	Matt Fleming <matt@...sole-pimps.org>,
	linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matt Fleming <matt.fleming@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86/efi: Add EFI framebuffer earlyprintk support

On Thu, Oct 10, 2013 at 07:45:21PM +0200, Ingo Molnar wrote:

> Also, the main question would be, what is the typical value for 
> si->lfb_depth. 32 on almost all EFI systems? All around the map? Depends 
> on what graphics state the EFI bootloader passes us?

Microsoft require that it be 32, so in practice I suspect it'll always 
be 32. It's possible that Itanium decides to be different.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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