linux-kernel - Re: [PATCH 05/18] powerpc: Wire up 44x little endian boot for remaining 44x targets

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Message-Id: <1286327715-sup-584@au1.ibm.com>
Date:	Wed, 06 Oct 2010 12:28:29 +1100
From:	Ian Munsie <imunsie@....ibm.com>
To:	Josh Boyer <jwboyer@...il.com>
Cc:	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	paulus <paulus@...ba.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH 05/18] powerpc: Wire up 44x little endian boot for remaining 44x targets

Excerpts from Josh Boyer's message of Fri Oct 01 21:27:37 +1000 2010:
> > From: Ian Munsie <imunsie@....ibm.com>
> >
> > I haven't tested booting a little endian kernel on any of these targets,
> > but they all claim to be 44x so my little endian trampoline should work
> > on all of them, so wire it up on:
> >
> > bamboo
> > katmai
> > kilauea
> > rainer
> > sam440ep
> > sequoia
> > warp
> > yosemite
> > ebony
> 
> I see no reason to do this at all.  If you haven't tested them and
> there is no demand, there's no reason to wire them up.  Some might
> actively want to disallow LE mode anyway, like the Warp or Sam440EP.

I wasn't aware that the Warp and Sam440EP disallowed LE mode - I'll
definitely unwire them and move the ARCH_SUPPORTS_LITTLE_ENDIAN to just
the sub-arch's that support it.

As for the other boards, I would like to wire them up if they are able
to support LE mode - If anyone has one handy I would love to hear if
they are able to begin booting a LE kernel with these patches, or when &
how they fail.

Cheers,
-Ian
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