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SubjectRe: Old platforms: bring out your dead
On Mon, Jan 11, 2021 at 9:19 AM Geert Uytterhoeven <> wrote:
> On Fri, Jan 8, 2021 at 11:55 PM Arnd Bergmann <> wrote:
> > * MIPS R3000/TX39xx: 32-bit MIPS-II generation, mostly superseded by
> > 64-bit MIPS-III (R4000 and higher) starting in 1991. arch/mips still
> > supports these in DECstation and Toshiba Txx9, but it appears that most
> > of those machines are of the 64-bit kind. Later MIPS32 such as 4Kc and
> > later are rather different and widely used.
> I have a (32-bit) RBTX4927 development board in my board farm, boot-test
> every bi-weekly renesas-drivers release on it, and fix kernel issues
> when they appear.

Right, I was specifically thinking of the MIPS-II/R3000 ones here, I know
there are users on multiple actively maintained MIPS-III platforms.

Regarding 32-bit vs 64-bit kernels, can you clarify what makes this one
a 32-bit board? Is this just your preference for which kernel you install,
or are there dependencies on firmware or hardware that require running
this machine in 32-bit mode?

(MIPS is not my area anyway, I'm just curious)


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