Jeremy, Edit the grub command line and remove both or one of console= or earlycon= below console=ttyS0,115200 earlycon=uart8250,mmio32,0x1c020000 to see if proceeds any further. -Phong -----Original Message----- From: Arm-dev [mailto:arm-dev-bounces at centos.org] On Behalf Of Jeremiah Rothschild Sent: Friday, January 26, 2018 5:04 PM To: Conversations around CentOS on ARM hardware Subject: Re: [Arm-dev] Kernel problems on APM X-Gene On Fri, Jan 26, 2018 at 04:48:24PM +0700, Phong Vo wrote: > Jeremy, Hi Phong. Thanks for the reply! Also, thank you for the tools & instructions to flash the Tianocore. That process worked great. :) > Is this on which board? Gigabyte MP30-AR0 (uart0). > Unless you provide a log file, it is difficult to tell, Understood. I have attached boot.log to this message. After this point, it freezes/hangs. > but latest CentOS 7.4 (kernel 4.11) boots fine on X-Gene platforms. > > I am not sure how you built kernel, but this is what you can check. To > boot X-Gene using acpi, you need to enable > CONFIG_ARM64_ACPI_PARKING_PROTOCOL=y. CentOS (RPM) default > configuration should already have this enabled. Interesting. It is enabled in the failing kernel: [root at hammer ~]# grep CONFIG_ARM64_ACPI_PARKING_PROTOCOL /boot/config-4.11.0-45.el7.aarch64 CONFIG_ARM64_ACPI_PARKING_PROTOCOL=y but it is not enabled in the working kernel that Gordan built for me: [root at hammer ~]# grep CONFIG_ARM64_ACPI_PARKING_PROTOCOL /boot/config-4.9.60-1.el7.centos.aarch64 [root at hammer ]# > -Phong > > +-----Original Message----- > +From: Arm-dev [mailto:arm-dev-bounces at centos.org] On Behalf Of > +Jeremiah Rothschild > +Sent: Friday, January 26, 2018 4:35 PM > +To: Conversations around CentOS on ARM hardware > +Subject: Re: [Arm-dev] Kernel problems on APM X-Gene > + > +On Sat, Nov 04, 2017 at 05:37:54PM +0000, Gordan Bobic wrote: > +> Apologies for taking so long to return to this thread, it took way > +> longer than expected to get to the machine and get it up and > +> running > +again. > + > +Thanks for the update & apologies as well on my delayed follow-up. > + > +Last time I wrote the mailing list about my kernel problems, I was > +told (by jperrin at centos.org) that my system was not in a supported > +state because I was daisy-chaining Tianocore EFI via U-Boot. I was > +directed to flash the Tianocore firmware and remove U-Boot from the equation. > +Although I was skeptical of this answer, I finally was able to do this. > + > +Unfortunately, however, this does not change behavior. I still cannot > +successfully boot into any kernels beyond 4.5 unless I use 'acpi=off'. > + > +I am, interestingly enough, able to run the 4.9.60 kernel that you > +supplied. > + > +So: > + > +(1) My experience leads me to believe that it is still a possibility > +that a kernel related bug exists. > + > +(2) I am confused as to why your kernel worked. I built kernel-alt- > +4.11.0-22.el7a from source and it fails like the others. Were there > +any special steps you took in building the rpm's you supplied me? > + > +(3) Is it true that you are able to boot into the (> 4.5) distro- > +supplied kernels? Or have you only tried/succeeded with your custom > +builds? > + > +Thanks again! > + > +j > + > +> I also just updated the build to the latest 4.9.60. > +> > +> Here is a download link to both binaries and src.rpm (download the > +> kernel tarball from kernel.org manually to build from src.rpm): > +> http://ftp.redsleeve.org/pub/misc/kernel/aarch64/RPMS/ > +> http://ftp.redsleeve.org/pub/misc/kernel/aarch64/SRPMS/ > +> > +> To recap - I am also running with Tianocore EFI chain-loaded from > +> u-boot, and mainling 4.9.x boots just fine on it. > +> > +> No need for disabling ACPI on the kernel command line, no need to > +> run EFI firmware as a 1st stage boot loader, it just works. > +> Do feel free to try it - if that works for you but the distro > +> supplied 4.5.x kernel doesn't, it seems reasonably conclusive that > +> it is the CentOS kernel that is broken for this board. > +> > +> I'd also be interested in learning whether you have any luck > +> getting PCIe cards to work with it without problems - I haven't > +> tried it since upgrading to 4.9.x, but certainly on 4.4.x mainline > +> the machine used to reliably lock up as soon as the driver for the PCIe card loads. > +> > +> Gordan > +> > +> > +> On Fri, Sep 22, 2017 at 12:06 PM, Jeremiah Rothschild > +> <jeremiah at franz.com> > +> wrote: > +> > +> > On Fri, Sep 22, 2017 at 11:59:00AM +0100, Gordan Bobic wrote: > +> > > On Fri, Sep 22, 2017 at 11:54 AM, Jeremiah Rothschild < > +> > jeremiah at franz.com> > +> > > wrote: > +> > > > +> > > > On Fri, Sep 22, 2017 at 11:39:19AM +0100, Gordan Bobic wrote: > +> > > > > If you are interested, I'm more than happy to share my > +> > > > > src.rpm for > +> > 4.9.x, > +> > > > > but won't be able to get to it before tomorrow morning as > +> > > > > the > +> > machine was > +> > > > > recently mothballed. > +> > > > > +> > > > Thanks. I actually need to test with as new of a version as I > +> > > > can > +> > because I > +> > > > have been experiencing an occasional "page allocation failure" > +> > > > kernel panic. > +> > > > No idea if/when that was fixed but I figure the newest > +> > > > version is my > +> > best > +> > > > hope. > +> > > > > +> > > > +> > > I've been on my own 4.9.x more or less since I got the machine, > +> > > it was in > +> > > 24/7 use, and I never experienced that issue. So it may be > +> > > worth a cross-check with the kernel that I'm running to see > +> > > whether the fault follows your machine or whether it is kernel dependent. > +> > > +> > You're right. It would be a good extra data point. Feel free to > +> > mail me directly once you're sorted and I'll gladly check out > +> > your 4.9 > +build. > +> > Thanks > +> > again! > +> > > +> > > +> > > +> > > _______________________________________________ > +> > > Arm-dev mailing list > +> > > Arm-dev at centos.org > +> > > https://lists.centos.org/mailman/listinfo/arm-dev > +> > > +> > _______________________________________________ > +> > Arm-dev mailing list > +> > Arm-dev at centos.org > +> > https://lists.centos.org/mailman/listinfo/arm-dev > +> > > + > +> _______________________________________________ > +> Arm-dev mailing list > +> Arm-dev at centos.org > +> https://lists.centos.org/mailman/listinfo/arm-dev > + > +_______________________________________________ > +Arm-dev mailing list > +Arm-dev at centos.org > +https://lists.centos.org/mailman/listinfo/arm-dev > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev