Date: Fri, 16 Oct 2009 07:37:27 -0400 From: John Baldwin <jhb@freebsd.org> To: Andriy Gapon <avg@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r198151 - in head/sys/dev: pci usb/controller Message-ID: <200910160737.28222.jhb@freebsd.org> In-Reply-To: <4AD80002.6000704@freebsd.org> References: <200910152007.n9FK78cG083259@svn.freebsd.org> <4AD80002.6000704@freebsd.org>
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On Friday 16 October 2009 1:09:22 am Andriy Gapon wrote: > on 15/10/2009 23:07 Andrew Thompson said the following: > > Author: thompsa > > Date: Thu Oct 15 20:07:08 2009 > > New Revision: 198151 > > URL: http://svn.freebsd.org/changeset/base/198151 > > > > Log: > > Workaround buggy BIOS code in USB regard. By doing the BIOS to OS handover for > > all host controllers at the same time, we avoid problems where the BIOS will > > actually write to the USB registers of all the USB host controllers every time > > we handover one of them, and consequently reset the OS programmed values. > > This should fix the boot-time problems with AMD SB600/SB7xx controllers. > Many thanks to Hans for a lot of help. At least one other system also exhibits this: Intel D850 motherboards (P4 system with RDRAM). I think there is an amd64 PR about this as well that may be for yet another system. -- John Baldwin
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