Date: Mon, 8 Oct 2018 19:25:44 +0200 From: Michael Tuexen <tuexen@fh-muenster.de> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, Justin Hibbits <chmeeedalf@gmail.com>, Nathan Whitehorn <nwhitehorn@freebsd.org> Subject: Re: Failed attempt to boot a (non-debug) head -r339076 on an old PowerMac G5 "Quad Core" (built via devel/powerpc64-gcc): Waking up CPU 1 Message-ID: <A7E94F86-E160-4E58-8C44-99DE109D2758@fh-muenster.de> In-Reply-To: <A62CE721-B12A-4A79-BC43-F4E0F412D695@yahoo.com> References: <0E6DB192-37A3-45EC-87E9-C5AA1C9397AE@yahoo.com> <785D268A-2612-459F-BD1F-A650D9ECCA28@fh-muenster.de> <A62CE721-B12A-4A79-BC43-F4E0F412D695@yahoo.com>
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--Apple-Mail=_616B06E8-6315-4668-B1CA-E3EA947E45B8 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii > On 8. Oct 2018, at 19:00, Mark Millard <marklmi@yahoo.com> wrote: >=20 > [kern.smp.disabled=3D1 is confirmed to enable booting > my head -r339076 build on teh "Quad Core", much like > the 11.2 reports for "2MHz dual-core".] Does 11.2 run with smp enabled? Best regards Michael >=20 > On 2018-Oct-8, at 3:09 AM, Michael Tuexen <tuexen at fh-muenster.de> = wrote: >=20 >>> On 8. Oct 2018, at 09:48, Mark Millard via freebsd-ppc = <freebsd-ppc@freebsd.org> wrote: >>>=20 >>> [I finally have access to old PowerMacs again. The below >>> is based on my environment for experimenting with building >>> via more modern C/C++ compilers with matching toolchains. >>> The build here was via a cross build from amd64 via >>> devel/powerpc64-gcc .] >>>=20 >>> When I attempt to boot the PowerMac G5 "Quad Core" >>> with my head -r339076 build it gets as far a reporting >>> (based on boot -v output): >>>=20 >>> . . . >>> ada0: (I'll not list the 5 ada0: lines) >>> GEOM: new disk cd0 >>> GEOM: new disk ada0 >>> Adding CPU 0, hwref=3Dff89d680, awake=3D1 >>> Waking up CPU 1 (dev=3Dff89eb70) >>>=20 >>> That is the last of the output. After a while the fans >>> wind up. (The text is hand translated from a picture >>> of the screen.) >>>=20 >>> Without the "boot -v" the "ada0:" lines are the last to >>> show. >>>=20 >>> The build is a non-debug build (with symbols). I've >>> not tried a debug kernel build yet. It may be a while >>> before I will get to. Nor have I tried a gcc 4.2.1 >>> based build yet. >>>=20 >>> At this point I do not have a clue what is going on. >>> This early in the boot I'm not sure how or if I'll >>> get a clue. (I've never had serial console access >>> on the old PowerMac's, which contributes to the messy >>> context.) >>>=20 >>> I do have in place in the variation used of src.conf: >>> LOADER_DEFAULT_INTERP=3D4th >>>=20 >>> The PowerMac G5 used does boot fine with the boot disk >>> I had experimented with back in May (or before). >> Does it boot when you disable SMP by adding >> kern.smp.disabled=3D1 >> to /boot/loader.conf >>=20 >> This turned a non-booting/hanging up dual CPU G5 into a >> very stable (single core) machine... >=20 > Sure enough, kern.smp.disabled=3D1 lets my -r339076 > devel/powerpc64-gcc based build boot on the G5 > "Quad Core". >=20 > Unfortunately I jumped from -r333594 (May-13) to > -r339076 so I can not well narrow the range for > when things changed beyond that. >=20 > I see that the original report was for 11.2, > while I'm using head. Also that Justin reported > seeing the problem on a 2GHz dual-core too (on > 11.x I assume). >=20 > So we have . . . >=20 > 2GHz dual-core (11.2) > 2.5 GHz "Quad Core" (2 dual-core processors) (head) >=20 > as contexts so far, not that the internal issue > needs to be the same for the two, but it might be. >=20 > I wonder if 11 at, say, -r333583 (May-13) might > be before its problem. If so, it might be easier > for someone using 11.x variants to find when > it broke in 11 than to do so for head, presuming > the problem is common. >=20 > Is there a bugzilla for this? >=20 > =3D=3D=3D > Mark Millard > marklmi at yahoo.com > ( dsl-only.net went > away in early 2018-Mar) >=20 --Apple-Mail=_616B06E8-6315-4668-B1CA-E3EA947E45B8 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEJAw ggTVMIIDvaADAgECAghQTsb1PRG0ZDANBgkqhkiG9w0BAQsFADBxMQswCQYDVQQGEwJERTEcMBoG A1UEChMTRGV1dHNjaGUgVGVsZWtvbSBBRzEfMB0GA1UECxMWVC1UZWxlU2VjIFRydXN0IENlbnRl cjEjMCEGA1UEAxMaRGV1dHNjaGUgVGVsZWtvbSBSb290IENBIDIwHhcNMTQwNzIyMTIwODI2WhcN MTkwNzA5MjM1OTAwWjBaMQswCQYDVQQGEwJERTETMBEGA1UEChMKREZOLVZlcmVpbjEQMA4GA1UE CxMHREZOLVBLSTEkMCIGA1UEAxMbREZOLVZlcmVpbiBQQ0EgR2xvYmFsIC0gRzAxMIIBIjANBgkq 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