A few months ago, we wrote that Western Digital was working on Linux & BusyBox RISC-V NOMMU, and managed to boot a minimal Linux OS on Kendryte K210 powered Sipeed Maix Go board. RISC-V NOMMU support was scheduled for Linux 5.5, and now that the new kernel has been released, Damien Le Moal has pushed the code allowing to build Linux and a busybox based roofs for RISC-V 64-bit NOMMU platforms using buildroot. I could start the build following the instructions on Github, but it failed as a Linux 5.6 RC1 tarball was missing. But I noticed “Vowstart” picked up on Damien’s work, and wrote detailed instructions. So let’s try the build out using a machine running Ubuntu 18.04. We’ll have to make sure dependencies are installed first:
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sudo apt install build-essential device-tree-compiler bison \ flex file git curl wget cpio python unzip rsync bc texinfo |
Then we can retrieve the source code and do some preparations (e.g. extract Linux 5.6 RC1 tarball):
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git clone https://github.com/vowstar/k210-linux-nommu.git cd k210-linux-nommu export PROJ_ROOT=$(pwd) sh ./prepare_buildroot.sh |
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