[Libre-soc-bugs] [Bug 450] Create MMU from microwatt mmu.vhdl

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=450

--- Comment #43 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #42)
> (In reply to Cole Poirier from comment #41)
> > (In reply to Cole Poirier from comment #40)
> > > Moving on to translating tests from mmu_tb.vhdl.
> > 
> > There is no mmu_tb.vhdl, 
> 
> argh ok.  well there is dcache_tb.vhdl which is a bit 

I'll need to first translate dcache.vhdl in order to use that right?

> > however, there is microwatt/tests/mmu/mmu.c which
> > has tests similar to the ones we have in mul/test/test_pipe_caller. 
> 
> these are c programs that need to be compiled then executed (test_issuer.py)
> and/or executed under litex-sim.
> 
> they therefore rely on having _everything_ in place.

Ah, I see, understood.

> > I'm
> > going to try and set up mul and div-like tests for mmu.py. To keep that
> > organized I will make a folder mmu under soc/src/experiment/.
> 
> no, i'd keep it much more basic than that.  similar to the regfile unit
> tests.

Gotcha, done. I've pushed a commit with the sim and test functions from
regfile/regfile.py renamed to mmu, but I think I will need your help in
beginning to write the sim function. Does that make sense? or am I confused?

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