Mainline linux kernel on ARM single board computers.

[crocket]

How do you configure mainline linux kernel on your ARM single board computers?

[xaviermiller]

Which one?

For my helios4, there is a defconfig provided, then I add needed support (mainly filesystems or network options).
_________________
Kind regards,
Xavier Miller

[NeddySeagoon]

crocket,

I don't.
A lot of the downstream kernel work has not been upstreamed.
Some never will.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[erm67]

Unfortunately linux no longer ships a defconfig for every SOC for arm 64 there is only 1 that enables all supported SOC, so basically you do a make defconfig (or zcat /proc/config.gz > .config; make olddefconfig) and disable the SOCs you don't need. IIRC recently all distro agreed to support kernels compiled using defconfig.

[crocket]

I just want single board computers to document necessary kernel config options.

[erm67]

Is it an SBC that implements fully the ARM architecture? Arm has plenty of documentation online, if instead it is a proprietary design that only implements some parts of the ARM architecture and adds protrietay custom chipsets probably is not fully documented. The other big question is wether it uses mainline uboot or a proprietary bootloader, based on uboot like Amlogic does or some shitty in-house proprietary bootloader that is fully undocumented.

Technically the hardware on the board is 'documented' in the dtb, that is exactly it's purpose, the non standard undocumented bootloader is often a problem since it initialized the hardware components, or maybe disables them, you should at least know at which address the dtb and kernel are loaded to boot an unmodified mainline kernel. Decompile the official dtb that comes with the board to know ehat hardware it has on board. Often there is a dtb in a flash partition, or the dtb is appended to the kernel, try

[crocket]

erm67, The SBC manufacturers shall just give us necessary linux kernel options. Expecting linux distributions to figure out kernel config options on their own is not a good idea.

[erm67]

They do, it's in the defconfig or in "platform selection" if it doesn't boot the problem is elsewhere and without a serial you're not going anywhere .... Last mont I tried the psychic debug metod for a board that wasn't booting only to find out half an hour later that my telepatic connection with the board was faulty and the problem was that the sd card wasn't properly inserted in the slot .......
_________________
Ok boomer
True ignorance is not the absence of knowledge, but the refusal to acquire it.
Ab esse ad posse valet, a posse ad esse non valet consequentia

My fediverse account: @erm67@erm67.dynu.net

[crocket]

How do you configure odroid n2 for mainline linux kernel?