Re: Committing code to evbmips?

[Simon Burge <simonb%NetBSD.org@localhost>]

Hi Jiaxun, Jason,

Jason Thorpe wrote:

> > On Nov 23, 2022, at 8:20 AM, Jiaxun Yang <jiaxun.yang%flygoat.com@localhost> wrote:
> >
> > Hi all,
> >
> > Recently I submitted a patch fixing evbmips/malta platform, now it
> > can boot on both real hardware and QEMU.  I submitted the patch
> > on port-evbmips/57085 but didn't heard anything back, is it the
> > proper way to submit code for review?
> >
> > A little bit about my plan, after malta QEMU boot being fixed I
> > think we can add it to Anita and get some test coverage.  I'm a
> > student working part time for a company making MIPS processors so
> > I familiar with MIPS stuff and would like to expand evbmips port
> > to other platforms like MIPS Boston evaluation board and upcoming
> > MIPS VirtIO platform, probably start A new sub-port like evbmips/uhi
> > which act as a general evbmips target for all platforms using MIPS
> > UHI booting protocol (i.e.  Standardised FDT).
> >
> > After that I may look into supporting newer MIPS ISA releases like
> > MIPS R6, and improve N64 ABI usage in NetBSD.
> >
> > Any comments are appreciated.
>
> Hi Jiaxun - thanks for raising the flag on this one - I just reviewed
> at the patch, and it looks good to me.  I'll see about integrating it
> in the next day or two (unless simonb objects).

I saw this patch, but wanted to test on either a 4Kc or 25Kf Malta
first.  We've had problems with GXemul and real hardware behaving
subtly differently in the past.

I also have some code somewhere for Bonito support alongside existing
GT64120 support.  I should dig that out again.

I had wanted to get N64 using hardware FP by default instead of
softfloat.  I just haven't gotten around to that :/  I haven't
looked at R6 at all, nor really looked at UHI either.

Is there something active with a full "virt" QEMU target?  Reinoud
Zandijk did some work to add virtio support to the current MIPPSIM
target but I understand the QEMU folks didn't want to change mipssim but
add a new target.

Cheers,
Simon.