Arm-dev

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686 discussions

AArch64 Pi4 and CentOS 8
by Brent Kolasinski 31 Oct '25

31 Oct '25

Hi everyone, I've been looking into things I can do to help with getting CentOS 8 AArch64 to run on the Pi4. It appears that the upstream kernel now has the proper stuff merged in to support the NIC and eMMC controller. So far 2 approaches are being made: The U-Boot mechanism (looks like this is what Ubuntu 20.04 is doing) and the SBBR (ACPI + UEFI) way. It looks like a few folks may be loading the SBBR firmware with luck on the standard CentOS 8 aarch64 image. Could one potentially recompile the SRPM for kernel 5.6 from elrepo and drop it in? I found the CentOS8 pi4 aarch64 userland image here: https://people.centos.org/pgreco. Has anyone tried getting the SBBR firmware to load the stock aarch64 CentOS 8 image without support for the eMMC / NIC, to basically bootstrap and compile the SRPM for the 5.6 kernel? And finally does anyone know if CentOS will be backporting the Pi4 changes to 4.18, or will they be releasing a custom kernel? Could I help out with that?

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rng-tools missing and /dev/hwrng without driver
by SW＠EU 31 Oct '25

31 Oct '25

Hi, today I will report a problem that is released to ipa-server. This server contains a certificate authority and such service need many entropy. The default on CentOS 7 on a Banana PI is not enough, i.e. $(cat /proc/sys/kernel/random/entropy_avail) is less than 1000. I have solved this in meantime by installing and enabling of haveged from the EPEL repository. Normally it would be done by installing the rng-tools. But there are two problems: 1. The rng-tools was not in the repositories, so I have downloaded rng-tools-5-8.fc24.armv7hl.rpm because this are the same version which is included in CentOS 7.3 for x86_64. 2. This rng-tools are usable but the daemon starts and stops immediately with the following error message: # rngd -v /dev/hwrng: No such device /dev/tpm0: No such file or directory No entropy sources found, exiting This is not the problem of this binary it is a problem of the Kernel. /dev/hwrng exists and if I remove it then it reappears after reboot, but # ls -l /dev/hwrng crw-------. 1 root root 10, 183 1. Jan 1970 /dev/hwrng # udevadm info -a -n /dev/hwrng Udevadm info starts with the device specified by the devpath and then walks up the chain of parent devices. It prints for every device found, all possible attributes in the udev rules key format. A rule to match, can be composed by the attributes of the device and the attributes from one single parent device. looking at device '/devices/virtual/misc/hw_random': KERNEL=="hw_random" SUBSYSTEM=="misc" DRIVER=="" ATTR{rng_current}=="none" ATTR{rng_available}=="" there is no driver for this device. I have searched and found this link http://forum.lemaker.org/thread-23618-1-1.html which includes a link to the full story. If I read all right then on bananian /dev/hwrng appears only if the adapted or a more actual sun4i-ss.ko module is loaded (there is written: "module author has indicated this will be going into the mainline kernel shortly“). This module is also loaded on a Banana PI with current CentOS 7. So does the kernel of CentOS 7.3 for ARM32 include this patch and if yes why it does not work or otherwise why this device appears but has no driver? TIA, Silvio Sent with [ProtonMail](https://protonmail.com) Secure Email.

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EPEL repo not available?
by Boyd Ako 31 Oct '25

31 Oct '25

Can anybody verify that the EPEL repo for ARMHFP isn’t available? I keep getting an error saying the REPOMD file isn’t there when running yum. It works if I use —disablerepo=epel\* when using yum. But, there might be some stuff in the EPEL that I’m looking for. Running it on a Raspberry Pi 3 and trying to get Nagios installed for home use. Domo, Boyd H. Ako boyd.hanalei.ako(a)gmail.com (424) 244-9653 https://www.boydhanaleiako.me “Coming together is a beginning. Keeping together is progress. Working together is success.” -Henry Ford PGP/GPG Public Key: https://sks-keyservers.net/pks/lookup?op=get&search=0xC58073B21618F134

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Gigabyte MP30-AR0
by Gordan Bobic 31 Oct '25

31 Oct '25

Hi, I am toying with the idea of getting a Gigabyte MP30-AR0 board (despite the insanely exorbitant price tag). Has anyone got the aarch64 CentOS working on one of those? Any special instructions? Also, if I get the ISO, is it bootable on aarch64? Does the installer work? Or does the image have to be used like on 32-bit ARM? Thanks. Gordan

13 203

Copying uboot from one SD to another
by Robert Moskowitz 19 Oct '25

19 Oct '25

How can I get the uboot off an SD card and then put it on another? dd is fine, but how much do I move? The whole 4MB infront of the first partition? Or is there some way to determine the actual uboot size and grab just that? thanks

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RPM kernels for PI2
by stephan54190 12 Oct '25

12 Oct '25

Hello the CentOS team, I just found something surprising, on http://mirror.centos.org/altarch/7.9.2009/kernel/armhfp/kernel-rpi2/Package… There, one can see many raspberrypi2-kernel RPMs: - raspberrypi2-kernel-5.10.23-v7.1.el7.armv7hl.rpm (initial) - ... - raspberrypi2-kernel-5.4.179-v7.1.el7.armv7hl.rpm (most recent one). But one can also see raspberrypi2-kernel-5.10.23-v7.1.el7.armv7hl.rpm, when all other 5.10.xxx come in "experimental". Am I wrong, or this leads YUM UPDATE to update to 5.10.23 and being stuck there (if experimental repo is disabled) ? Regards, Stephan.

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Old armv7 system needs repo urls
by Robert Moskowitz 07 Jun '25

07 Jun '25

I have an old armv7 (Cubieboard2) system that I need to add httpd as an interim until the new hardware comes. But "yum install httpd" can't find a repo Trying other mirror. http://ftp.osuosl.org/pub/centos-altarch/7.6.1810/kernel/armhfp/kernel-gene…: [Errno -1] Error importing repomd.xml for centos-kernel: Damaged repomd.xml file Trying other mirror. Can someone point me to where some repos are and what files I need to update (it has been years since I touched this)? thanks

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Issues with SELinux Configuration on CentOS 8
by hasseebhasseeb786786＠gmail.com 03 Feb '25

03 Feb '25

Hello everyone, I’m currently working on a CentOS 8 server and have been facing some challenges with SELinux configuration. I need to set up a web server using Apache, but I keep running into permission denied errors when trying to access certain directories. I’ve checked the SELinux status using the sestatus command, and it shows that SELinux is enforcing. I’ve tried setting the context for the directories using chcon, but the changes don’t persist after a reboot. Here are the steps I’ve taken so far: Verified SELinux status with sestatus. Used chcon to change the context of the directories. Attempted to set SELinux to permissive mode temporarily to see if it resolves the issue. Despite these efforts, I’m still unable to access the directories as intended. Could anyone provide guidance on how to properly configure SELinux for Apache on CentOS 8? Are there specific policies or commands I should be using to ensure that the changes persist after a reboot? Any help would be greatly appreciated! Thank you! <a href="https://dunkindonutmenu.com/">https://dunkindonutmenu.com/</a> <a href="https://lowtaperfades.net/">https://lowtaperfades.net/</a> <a href="https://apkhappymods.org/">https://apkhappymods.org/</a> <a href="https://rizzline.org/">https://rizzline.org/</a> <a href="https://wolfcut.hair/">https://wolfcut.hair/</a> <a href="https://girlhawktuah.org/">https://girlhawktuah.org/</a> <a href="https://riddlesforkid.com/">https://riddlesforkid.com/</a> <a href="https://ropeheroapk.org/">https://ropeheroapk.org/</a> <a href="https://apkhappymods.org/">https://apkhappymods.org/</a> <a href="https://nullbrawl.app/">https://nullbrawl.app/</a> <a href="https://gtasanandreasapk.org/">https://gtasanandreasapk.org/</a> <a href="https://clashofclansapk.org/">https://clashofclansapk.org/</a> <a href="https://monopolygodice.org/">https://monopolygodice.org/</a>

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How to Use UEFI on Gigabyte MP30-AR0
by YOYO 09 Oct '24

09 Oct '24

Hello everyone, As I've wrote in url[1], I recently got a Gigabyte Mp30-AR0 (rev 1.1) motherboard from a online second-hand market. Thanks to those helpful Linux enthusiasms, I'm now clear that I should firstly find a way to turn the motherboard from U-Boot mode to UEFI mode. And I saw a discuss thread from this mailing-list(url[2]), especially messages, as url[3] to [6]. I do not want to write UEFI firmware into onboard flash or EEPROM.  Instead, I wish I could put the firmware just in a USB-storage or SD card,  so that the original on-board U-Boot and build-in OpenLinux.  So I would like to boot as Gordan Bobic and Michael Howard had discussed: (Also referring to url[4], [5] and [6].) 1) u-boot (on-board) 2) UEFI (wherever u-boot can fetch it from) 3) grub (off the UEFI FAT partition on the target disk) 4) Kernel (/boot partition) However, I couldn't find out how to set U-Boot to boot as above. One another problem is that, I couldn't get access to url[9], which is mentioned in url[3], [7] and [8]. Thank you for your generous help in advance. Also please pardon my not reply on time because I couldn't apply your advises into use immediately. BTW: Please tell me if there is any need tool like RS232-to-USB converter etc.  Lists of mentioned Urls: url[1]:  https://lists.debian.org/debian-arm/2024/09/msg00016.html url[2]:  https://lists.centos.org/hyperkitty/list/arm-dev@lists.centos.org/thread/6J… url[3]:  https://lists.centos.org/hyperkitty/list/arm-dev@lists.centos.org/message/C… url[4]:  https://lists.centos.org/hyperkitty/list/arm-dev@lists.centos.org/message/6… url[5]:  https://lists.centos.org/hyperkitty/list/arm-dev@lists.centos.org/message/K… url[6]:  https://lists.centos.org/hyperkitty/list/arm-dev@lists.centos.org/message/Y… url[7]:  https://lists.centos.org/pipermail/arm-dev/2016-February/021839.html url[8]:  https://lists.centos.org/pipermail/arm-dev/2016-March/001743.html url[9]:  https://dl.dropboxusercontent.com/u/20403943/mp30ar0_tianocore_binaries.tar… Best Regards, Richard Zhang

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nss-3.67.0-4 (and related packages) missing for arm-64
by Raj Shekhar 08 Mar '22

08 Mar '22

Hi I a running centos-7.9 (CentOS Linux release 7.9.2009 (AltArch)) nss had a vulnerability reported with a CVSS score of 9.8 (https://access.redhat.com/security/cve/CVE-2021-43527) I can see that there is a x86_64 package for nss that fixes this vulnerability (nss-3.67.0-4.el7_9.x86_64) rpm -q nss --changelog |head -n 10 * Thu Nov 18 2021 Bob Relyea <rrelyea(a)redhat.com> - 3.67.0-4 - fix CVE-2021-43527 However, when I tried to find the updated package for aarch64, I don't see a package fixing this vulnerability for aarch64. Reading the security report seems to indicate that this affects all architectures. I can also see that amazonlinux and oracle linux have released nss packages to address this vulnerability. Looking through the centos forums, I have not been able to figure out why this package is missing for aarch64. Does someone know why this package with high vulnerability has not been updated for centos-7.9? Thanks for your guidance. -- Raj Shekhar

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