Date: Tue, 7 Jun 2011 15:31:58 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Andriy Gapon <avg@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: svn commit: r222795 - head/sys/dev/atkbdc Message-ID: <201106071532.01179.jkim@FreeBSD.org> In-Reply-To: <4DEE773B.9090903@FreeBSD.org> References: <201106062303.p56N3cjs053024@svn.freebsd.org> <201106071402.11620.jhb@freebsd.org> <4DEE773B.9090903@FreeBSD.org>
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On Tuesday 07 June 2011 03:08 pm, Andriy Gapon wrote: > on 07/06/2011 21:02 John Baldwin said the following: > > On Tuesday, June 07, 2011 11:39:26 am Jung-uk Kim wrote: > >> On Tuesday 07 June 2011 09:52 am, John Baldwin wrote: > >> The whole point of this commit is to blacklist *recent* BIOS (or > >> CSM) from probing keyboard typematic information, more > >> specifically, recent Intel chipset platforms. They don't > >> support many INT 15h/16h functions but only cause trouble at > >> best. OTOH, I haven't seen such problems with AMD chipset > >> systems and they all seem to have traditional entry points at > >> the interrupt vector table, for example. > > > > Err, but you didn't blacklist recent BIOS. You blacklist _all_ > > BIOS that use entry points other than the ones from the UEFI > > spec, including BIOSes that don't claim to support UEFI and the > > BIOS from the two systems I quoted. > > I'd like to simply add two datapoints: > 1) recent AMD system: > > $ dd if=/dev/mem bs=4 iseek=0x15 count=2 | hd > 00000000 59 f8 00 f0 2e e8 00 f0 Yes, that's exactly what I am seeing from all of my AMD systems and a 11-year old Pentium III system. > 2) very old PIIX/440BX system (manufactured ~1999): > $ dd if=/dev/mem bs=4 iseek=0x15 count=2 | hd > 00000000 9a 06 b8 9c 2e e8 00 f0 INT 15h is relocated under 0xa0000, i.e., "highmem". Are you using non-FreeBSD chain loader? Do you have "relocate to highmem" option in the BIOS configuration? Most importantly, does it support keyboard typematic feature? Jung-uk Kim
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