Advice for opi cm5

[RealAstolfo]

Hi! im trying to use nix build .#nixosConfigurations.orangepi5.config.system.build.sdImage

to build an sd card image for my cm5 base board.

prompting this error.

Explicitly requested dtbName rockchip/rk3588s-orangepi-5.dtb, but there's no FDTDIR - bailing out.

i comment the name out for both orangepi5.nix and the board orangepi5.nix, as an attempt to make it autodetect. but that results in an sd-image that succeeds to build but wont boot on the orangepi cm5 base board.

any advice? am i using the flake wrong?

[gnull]

Hi! Sorry, I was away from Github for a month, saw the post just now.

When you got the first error, did you build an unmodified .#nixosConfigurations.orangepi5.config.system.build.sdImage or did you change anything in the code?

Also, when the SD image failed to boot for you, did you have U-Boot installed in boards's SPI (e.g. by booting Armbian)?

I never ran this flake on CM5, but our kernel source code has a DTS file for it, looks like it should be possible to make it work with some debugging. What I would try is: take orangepi5 as a base (like you did), and try setting hardware.deviceTree.name to contain the name of rk3588s-orangepi-cm5.dts and see if shows any signs of life (over ssh, HDMI or UART console). Getting UART to work may require changing console in boot.kernelParams, the concrete name is platform dependent, hard to tell what it's going to be on CM5.

[RealAstolfo]

i think my issue is that the official armbian does not come with the cm5 dtb installed, so things like ethernet or whatever shows up but wont work. perhaps ill try my luck with the orangepi debian

[gnull]

There may be some prebuilt images on OPi website for your board, in case you just want something that runs.

If you manage to install U-Boot in your board's SPI flash using those images, you can come back and we will try to get NixOS running. I have an idea of how to make a NixOS image for OPi 5cm.

[RealAstolfo]

ill get to it when i can, just wanted to acknowledge your message since im very stocked full with work atm