[Arm-dev] AArch64 Pi4 and CentOS 8

Wed May 13 01:43:16 UTC 2020
Ron Wheeler <rwheeler at artifact-software.com>

Will tftp boot of CentOS 8 be supported in your first release?



On 2020-05-12 2:39 p.m., Pablo Sebastián Greco wrote:
>
> On 12/5/20 00:43, Brent Kolasinski wrote:
>> 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.
> Nice, we need help testing/fixing things!!
>>
>> 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.
> Yes, I'm really looking forward to test this https://github.com/pftf 
> but no time yet
>>
>> 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?
> I think some of the patches landed for 5.6 and some for 5.7, The 
> images you pointed are using the kernel from the raspberry pi 
> foundation (https://github.com/raspberrypi/), what I'm working on 
> right now is building those kernels, but as a subpackage of our normal 
> kernel-lts kernel, which would allow people to switch kernels back and 
> forth, while still keeping the same LTS logic
>>
>> 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?
> Unless something starts working as a side effect of another backport, 
> I don't think there's any chance of 4.18 including rpi patches. What 
> we will be doing is releasing our lts kernels and hopefully 
> backporting some functionality for it to work until the next lts comes 
> around.
> As soon as I have a kernel that at least boots, I'll post it somewhere 
> for you to test
>
> HTH, Pablo
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-- 
Ron Wheeler
Artifact Software
438-345-3369
rwheeler at artifact-software.com

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