Date: Fri, 14 Apr 2006 03:47:51 +0000 (UTC) From: Maxim Sobolev <sobomax@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/boot/i386/cdboot cdboot.s src/sys/boot/i386/pxeldr pxeldr.S Message-ID: <200604140347.k3E3lpdY059858@repoman.freebsd.org>
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sobomax 2006-04-14 03:47:51 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sys/boot/i386/cdboot cdboot.s
sys/boot/i386/pxeldr pxeldr.S
Log:
MFC: When enabling A20 put upper limit on amount of time we wait for the
keyboard controller to get ready (65K x ISA access time, visually around
1 second). If we have wait more than that amount it's likely that the
hardware is a legacy-free one and simply doesn't have keyboard controller
and doesn't require enabling A20 at all.
This makes cdboot/pxeldr working for MacBook Pro with Boot Camp and
other legacy-free i386 hardware like IBM Netvista S40.
Approved by: re (scottl)
Revision Changes Path
1.13.8.1 +10 -3 src/sys/boot/i386/cdboot/cdboot.s
1.13.8.1 +10 -3 src/sys/boot/i386/pxeldr/pxeldr.S
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