linux-kernel - Re: Early keyboard initialization?

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Message-ID: <Pine.LNX.4.61.0610121007480.17740@yvahk01.tjqt.qr>
Date:	Thu, 12 Oct 2006 10:10:38 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Giuseppe Bilotta <bilotta78@...pop.com>
cc:	linux-kernel@...r.kernel.org
Subject: Re: Early keyboard initialization?

>> It looks like the change will only work for non-USB input devices since
>> USB subsystem is initialized much later.
>
>Doesn't the BIOS handle USB keyboards someway? (To handle BIOS setup
>and stuff like that)
>
>If the BIOS emulates a non-USB keyboard, would it be possible to init
>the fake one early and then give up control when the USB subsystem is
>initialized?

The BIOS seems to handle USB keyboards during BIOS init,
just like it 'emulates' any hard drive as 0x80 when used with int13.

I'd be interested in how USB keyboard only systems handle this - I think 
the newer SPARCs on the market fall into this category.

	-`J'
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