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wip-pinebook-pro
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Work of samueldr to run NixOS on the Pine64 Pinebook Pro
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README.md

WIP stuff to get started on the pinebook pro.

u-boot

Assuming /dev/mmcblk0 is an SD card.

$ nix-build -A pkgs.uBootPinebookPro
$ lsblk /dev/mmcblk0 && sudo dd if=result/idbloader.img of=/dev/mmcblk0 bs=512 seek=64 oflag=direct,sync && sudo dd if=result/u-boot.itb of=/dev/mmcblk0 bs=512 seek=16384 oflag=direct,sync

The eMMC has to be zeroed (in the relevant sectors) or else the RK3399 will use the eMMC as a boot device first.

Alternatively, this u-boot can be installed to the eMMC.

Installing to SPI has yet to be investigated.

Image build

$ ./build.sh
$ lsblk /dev/mmcblk0 && sudo dd if=$(echo result/sd-image/*.img) of=/dev/mmcblk0 bs=8M oflag=direct status=progress

The build.sh script transmits parameters to nix-build, so e.g. -j0 can be used.

Once built, this image is self-sufficient, meaning that it should already be booting, no need burn u-boot to it.

The required modules (and maybe a bit more) are present in stage-1 so the display should start early enough in the boot process.

The LED should start up "amber, red, amber, green, amber" with this u-boot configuration, as a way to show activity early. The kernel should set it to green as soon as it can.

Note about cross-compilation

This will automatically detect the need for cross-compiling or not.

When cross-compiled, all caveats apply. Here this mainly means that the kernel will need to be re-compiled on the device on the first nixos-rebuild switch, while most other packages can be fetched from the cache.