-----Oorspronkelijk bericht----- > Afzender:Pablo Sebastián Greco <pablo at fliagreco.com.ar> > Verstuurd: Woensdag 17 Oktober 2018 18:09 > Aan: Conversations around CentOS on ARM hardware <arm-dev at centos.org> > Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > > > El 17/10/18 a las 11:47, Mark Verlinde escribió: > > Hi, > > > > Kernel 4.18.x brings nice features, CPUFreq for Allwinner H3 SOC's being among them. > > > > Therefore I had a go on updating to the community-kernel-latest version 4.18.14-200.el7 which failed; > > Dracut could not (re)build a intitramfs-4.18.14-.. and (probably because of this) uInitrd-4.18.14-.. was missing to. > > Unfortunately did not write the exact error message down; next time will do so. > Does /boot have enough space?, I usually try to have 3 kernels at most. > I've been using that kernel in 3 different SoCs without problems, > including Bananapi M3 (same SoC as the cubieboard5) I do not doubt it had because it was the second kernel update done (i.e would be the 3rd installed) However : just successfully installed with a more conservative approach 4.17.17 > 4.18.9 > 4.18.14 Side note is: this is on a home brew image without RPI bits and peaces, 786MB boot partition with ext4 file-system. In time I will try again with default Centos-Generic image. i'm happy now:) cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand > > > > BTW: Update to Kernel 4.17.17-200.el7 was successful on my oragngepi-plus2e > > > > In my own interest i'd really want to help to debug this; > > but to be able to do this i need to understand in more detail how we boot Centos on our u-boot based SBC's. > > I got the broad picture: u-boot >> extlinux bootloader >> kernel >> > Correct > > Getting lost however looking at extlinux/extlinux.conf , grub/grub.conf and not knowing the content of boot.scr > You can ignore grub.conf and boot.scr, extlinux.conf is all you need Sorry to persist, I'd really like to understand in more detail; Questions circling in my head (among others) are: Why do we have a uInitrd _and_ initramfs ? Why do we have a uimage _and_ vmlinux ? Why does my odroid HC1 boot with a Fedora image but not with Centos (kernel 4.14.71 nor 4.17.17)? (despite specific USB3 patches are backported to 4.14) > > > > Can somebody enlighten me on this, or show me some further reading. > > > > (I did search fedora's arm documentation without getting smarter..) > > > > Actually in response to "Cubieboard5 performance" > > (https://lists.centos.org/pipermail/arm-dev/2018-October/003515.html) > > > > > > _______________________________________________ > > 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 >