(Sorry about the delay on my end, deadlines ...) On Fri, Sep 21, 2018 at 06:07:48PM +0000, York Sun wrote: > On 09/21/2018 10:47 AM, Scott Wood wrote: > > On Fri, 2018-09-21 at 17:40 +0000, York Sun wrote: > >> On 09/20/2018 05:31 PM, Scott Wood wrote: > >>> On Fri, 2018-09-21 at 00:48 +0200, David Lamparter wrote: > >>>> My dusty old P4080DS just completely fails to boot (no output at all) > >>>> without this revert. I have no clue what's going on here, I just > >>>> bisected it down and since it looks like an optimization to me I just > >>>> reverted it - and voilá, the P4080 boots again. > >>> > >>> It's not an optimization; it was required to get kdump working, at least > >>> for certain choices of crash kernel location. [...] > >>> York, can you try booting the latest kernel on p4080ds? [...] > > Thanks for the instruction. Linux comes up OK with corenet32_smp_defconfig. > > root@p4080ds:~# uname -a > Linux p4080ds 4.19.0-rc4-00206-ga27fb6d #1 SMP Fri Sep 21 10:56:36 PDT > 2018 ppc GNU/Linux
Well, shoot. I guess the next likely thing is that I have something weird enabled in my .config, so I'll try booting corenet32_smp_defconfig on my P4080DS. (I vaguely think I did that at some point but I can't swear to it so I'll just retry.) If that doesn't boot, could either of you provide me with your built uImage so I can exclude toolchain stupidity? => I'll send another mail when I got to try corenet32_smp_defconfig. Aaaand, during the past week I noticed this is a rev1.0 P4080 chip, which apparently only exists on some early P4080DS boards - and Freescale even did a replacement program to get rev2.0 boards out (I guess this one was sitting in some broom closet.) I don't have access to erratas for this, I only know the entire QMan/FMan stuff is royally f*cked - no idea whether the PPC core has issues too. FWIW, my board is running perfectly stable with that patch I posted and I'll just carry it locally if it's an issue for this one specific board I have here. I just don't have sufficient information to tell if that is indeed the case. Thanks a lot for your input and help, -David
