Date: Mon, 1 Nov 2010 11:04:49 -0400 From: Justin Hibbits <jrh29@alumni.cwru.edu> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-sparc64@freebsd.org, freebsd-ppc@freebsd.org Subject: Re: Review request -- splitting OF enumeration from nexus Message-ID: <AANLkTi=gRYzoCeWe=6Wd3JbfAKtbT4FJpT_BUYrsAJsX@mail.gmail.com> In-Reply-To: <4CCDD51F.2040003@freebsd.org> References: <4CCDD51F.2040003@freebsd.org>
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On Sun, Oct 31, 2010 at 4:44 PM, Nathan Whitehorn <nwhitehorn@freebsd.org>wrote: > Nexus on OF platforms doesn't behave like nexus on x86, which generates > some periodic difficulty with cryptosoft or syscons attaching to all devices > and taking over the system when someone makes a wrong assumption. I have > done some work to split out OF enumeration into a new, acpi(4)-like bus > called ofwbus that does all of the OF enumeration previously done by > nexus(4). The patch can be found at > http://people.freebsd.org/~nwhitehorn/ofwbus.diff. > > Doing this also provides a number of other benefits: it shares code between > PowerPC and sparc64, unifies the AIM and Book-E nexus implementations on > PPC, and makes it easier to have non-Open Firmware platforms on PPC (the > original motivation for the work). I have tested this code with no obvious > problems on a variety of Apple PPC machines and a Sun Ultra 5. More testing > and comments would be much appreciated. If no has any objections, I will > commit these changes in 2 weeks. > -Nathan > Building world now, and will test when I get home this evening. A note to others: powerpc/powerpc/nexus.c is a resurrected file, so I needed to copy it from powerpc/aim/nexus.c before the patch would apply. - Justin
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