Re: MIPS® Creator CI20 / clang/llvm?

[sson]

John Connett wrote
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> Is anyone actively working on FreeBSD for the MIPS® Creator CI20?
> 
> What is the current status of building FreeBSD-MIPS using clang/llvm?
>  I found some information here:
> 
>     https://wiki.freebsd.org/BuildingFreeBSDWithClang
> 
> but it is note that the information is out of date.
> 
> I asked Kai Nacke about his slides from FOSDEM '15:
> 
>     http://llvm.org/devmtg/2015-02/slides/kai-assembler.pdf
> 
> which mentions the JZ4780 and "> 60 new instructions (MXU extension)".
>  Kai told me that he used the JZ4780 as an example but he is not aware
> of anyone working on integrating the new MXU instructions.
> 
> I have a CI20 Revision B (purple circuit board) and am willing to
> experiment with it.  I don't have access to any other mipsel hardware.
>  I do have access to a reasonably quick x86_64 which I could use for
> cross-compilation or simulation.
> 
> Any suggestions to which versions of clang/llvm and target
> (mipsel-portbld-freebsd10.1?) to try?
> 
> Thanks in anticipation
> - --
> John Connett
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I am not aware of any FreeBSD effort but have you looked at Michael Lorenz's
CI20 NetBSD work?  

https://blog.netbsd.org/tnf/entry/ci20_reaches_userland

That would be a good reference for a FreeBSD port.

-stacey.






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