Alpine Linux on the Duo?

Fishwaldo · April 9, 2024, 6:30am

The newer compiler used to make the debian/arch images emits a FENCE.TSO instruction which is not supported on the C906 implemented in the CV200x (and I suspect the CV180x as well although I don’t own one to test)

You need these patches for opensbi that will emulate the FENCE.TSO instructions:

github.com/milkv-duo/duo-buildroot-sdk

Add FENCE.TSO Emulation to opensbi

milkv-duo:develop ← Fishwaldo:develop

opened 06:29AM - 09 Apr 24 UTC

Fishwaldo

+17 -1

This is not strictly necessary for the duo-buildroot, but as some people are usi…ng this to create a fip.bin for use with other distributions (such as Ubuntu/arch etc) I'm opening this PR. This back-ports the FENCE.TSO emulation in mainline opensbi. FENCE.TSO instruction is emitted by newer compilers and unfortunately the C906 CPU used in the CV200x is missing this instruction. Without this fix, some binaries compiled with newer versions of GCC/Clang etc will crash with a illegal instruction (as seen here for example: https://community.milkv.io/t/alpine-linux-on-the-duo/700/17) This should have no impact upon the duo-buildroot as the gcc version used to compile it does not emit FENCE.TSO.