Date: Tue, 11 Apr 2006 20:40:16 -0700 From: Maxim Sobolev <sobomax@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/boot/i386/cdboot cdboot.s Message-ID: <443C76A0.30308@FreeBSD.org> In-Reply-To: <200604111803.27889.jhb@freebsd.org> References: <200604110439.k3B4dTOD072774@repoman.freebsd.org> <200604111358.41929.jhb@freebsd.org> <443C19A9.1000108@FreeBSD.org> <200604111803.27889.jhb@freebsd.org>
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John Baldwin wrote: > On Tuesday 11 April 2006 17:03, Maxim Sobolev wrote: >> John Baldwin wrote: >>> On Tuesday 11 April 2006 10:34, Maxim Sobolev wrote: >>>> boo1 does the same - timeout loop. My small research seemingly suggests >>>> that doing A20 via the BIOS is not very reliable and may not work on all >>>> machines. >>> Can you test a patch for pxeboot? It looks to be the one other place that >>> goes near the A20 line. >>> >>> http://www.FreeBSD.org/~jhb/patches/pxe_a20.patch >> Done. Returning to the subject, loader's version of A20-enabling routine >> suffers from the very same problem (libi386/gatea20.c), but luckily we >> don't use this routing in the loader at all. I suspect that it relies on >> A20 being enabled by previous boot stages. > > Did you test it for the non-legacy case as well? :-P I already took > care of the loader's A20 hack. :) Well, since we distribute this "timeout hack" as part of boot1 loader for ages I think it should be just fine for the "normal", legacy-full i386 machine. BTW, can you please take a look at the problem with SMP bootstrap on Aplintel notebooks? For some reason our SMP kernel can't start the second processor. You can find more details here: http://groups.google.ca/group/mailing.freebsd.current/browse_thread/thread/2b554e7a6cf3d3cd/b4f74b7c7907cb41?lnk=st&q=%22Intel+Macs+that+boot+FreeBSD%3F%22&rnum=1&hl=en#b4f74b7c7907cb41 You can find acpidump here: http://people.freebsd.org/~sobomax/acpi.out mptable tells that there is no MP table... -Maxim
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