Date: Wed, 24 Apr 2019 15:16:57 -0700 From: Mark Millard <marklmi@yahoo.com> To: Justin Hibbits <chmeeedalf@gmail.com>, Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: PowerMacs with modern VM_MAX_KERNEL_ADDRESS for non-usefdt mode and usefdt mode (head -r345758 variant) Message-ID: <87F32871-FAED-4F53-81E6-4B94B82C303F@yahoo.com>
index | next in thread | raw e-mail
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233863 now has patches for head -r345758 which have all the G3, G4, and G5 PowerMacs that I have access to (that FreeBSD has ever been able to boot) operating for both: A) the historical non-usefdt mode (openfirmware used live) B) usefdt mode using the modern VM_MAX_KERNEL_ADDRESS values. I do not claim to have coded to FreeBSD source code standards. The patches, as they are, are more for the information they, and the various patch-attachment notes, contain about what was a sufficient set of changes. For parts of it, at least one other direction of change would be an alternative. I viewed generating the patches as investigatory for the goal of "get PowerMacs going again for non-usefdt mode --and usefdt mode", not as definitive of the best form of change for getting them going. As far as I know no one else has tested if the patches work in their PowerMac context --or for any non-PowerMac context for that matter. (Both are important but I'm limited to old PowerMac's for powerpc64 and 32-bit powerpc.) I'm not sure what PowerMac's I'll have access to fairly soon, possibly only one. Nor am I sure how much time I'll have. Hopefully the patches and their notes are of some help if FreeBSD is to continue to officially support PowerMacs. Note: In my personal environment I've set things up to use: OK set nousefdt OK boot and default to usefdt mode, instead of using: OK set usefdt OK boot and defaulting to openfirmware-used-live. This change is not in the patches that I submitted. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?87F32871-FAED-4F53-81E6-4B94B82C303F>