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[Fishwaldo]

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[Hunter1753]

Hi, I'm Alex and I would like to start developing one of the missing drivers for the bl808.

What's currently holding me back is that I don't understand how I can do kernel development for this, as I can't even get buildroot to use the kernel directory I specify.

I would appreciate any help with getting started :)

[Fishwaldo]

Its best to develop outside of buildroot for kernel work. The main focus of buildroot is the rootfs.

To do kernel development, basically setup your own kernel tree (we are working from https://github.com/arm000/linux-bl808/tree/linux-next/mboxic mainly) and build the kernel there.

Then to flash, copy fw_jump.bin and merge.py from the buildroot and basically copy these steps:
https://github.com/openbouffalo/buildroot_bouffalo/blob/main/board/pine64/ox64/post-build.sh (minus the "create filesystem image")

then burn the resultant bin file using the IOT tab as per the instructions

[Hunter1753]

So I just install the compilers and I then make the kernel with
make ARCH=riscv CROSS_COMPILE=/usr/bin/riscv64-unknown-elf-
right?

I will try this out tonight, thank you!

[Hunter1753]

ok, it worked with the SDK, thanks for your help