[Buildroot] [PATCH 3/3] arch/mips: add (Marvell) Octeon III processor

[Thomas De Schampheleire]

El mié., 30 ene. 2019 a las 21:29, Thomas Petazzoni
(<thomas.petazzoni at bootlin.com>) escribió:
>
> Hello Thomas,
>
> On Wed, 30 Jan 2019 21:12:24 +0100
> Thomas De Schampheleire <patrickdepinguin at gmail.com> wrote:
>
> > @@ -156,6 +163,7 @@ endchoice
> >  config BR2_MIPS_SOFT_FLOAT
> >       bool "Use soft-float"
> >       default y
>
> Not related directly to your patch, but MIPS related anyway: does it
> make sense to default to soft-float ?
>
> Wouldn't it better to have, like on ARM, an indication of which MIPS
> cores support hardware floating point, and for those, default to using
> hardware floating point ?

I don't know the reason why it was done this way. Perhaps historically
most MIPS had no floating-point unit?
Or maybe because originally there were only 'generic' variants
described, like 'mips32r2' for which it is not defined if there is a
floating-point unit in the actual SoC implementation.

In any case, the strategy you describe sounds more 'neutral'.
But it requires investigating whether or not the existing processors
definitely/maybe/never have an FPU.

/Thomas