Re: PowerPC Cross-compile of 2.6 kernels

[Tom Rini <trini@kernel.crashing.org>]

On Fri, Sep 12, 2003 at 09:52:23AM -0700, Judith Lebzelter wrote:

> On Fri, 12 Sep 2003, Tom Rini wrote:
> 
> > On Wed, Sep 10, 2003 at 04:41:05PM -0700, Judith Lebzelter wrote:
> > > Hello,
> > >
> > > In response to requests at OLS, we've added cross-compile
> > > capability to the PLM, and the first architecture
> > > implemented is PowerPC.  The powerpc code is
> > > generated via a cross-compiler set up using Dan
> > > Kegels's crosstool-0.22 on an i386 host using gcc-3.3.1,
> > > glibc-2.3.2 and built for the powerpc-750.
> > >
> > > The filter run is the compile regress developed by John
> > > Cherry at OSDL.  Refer to his prior mail on lkml for the
> > > results of this filter on ia386 and IA64.
> > >
> > > Look at
> > >     http://www.osdl.org/plm-cgi/plm?module=search
> > > and look up linux-2.6.0-test5 or any later kernels for the
> > > results of this filter under 'PPC-Cross Compile Regress'.
> > >
> > > Does anyone have any input regarding requests for
> > > additional architectures or improvements to the
> > > filters?  Please cc me in any responses to lkml as I do
> > > not currently monitor this list, though other OSDL
> > > employees do.
> >
> > Is there any way to seed the config so that it will override what
> > allmodconfig (or allyesconfig) sets?  Both of these targets by nature
> > pick an 'odd' machine to compile for.
> >
> 
> The 'allmodconfig' is what we run, and it chose
> #
> # Platform support
> #
> CONFIG_PPC=y
> CONFIG_PPC32=y
> CONFIG_6xx=y
> 
> #
> # IBM 4xx options
> #
> CONFIG_EMBEDDEDBOOT=y
> CONFIG_8260=y
> CONFIG_PPC_STD_MMU=y
> CONFIG_SERIAL_CONSOLE=y
> # CONFIG_EST8260 is not set
> # CONFIG_SBS8260 is not set
> # CONFIG_RPX6 is not set
> # CONFIG_TQM8260 is not set
> CONFIG_WILLOW_1=y
> 
> I had to change this to do TQM8260 because the header file willow.h is
> missing and the number of errors for this one file made the compile look
> far worse than it actually was.  If you suggest something, I will
> change it.

Don't select 8260 at all, and then the default choice should be
CONFIG_PPC_MULTIPLATFORM, which is normally the best choice.

I suppose this is more incentive for removing the rather bogus
distinction made for 8260 boards.

> I also realize that my output should include any changes I make to the
> configurations and have that changed right away.
> 
> We are also adding the 'allyesconfig' and will apply the same platform
> changes as to 'allmodconfig'.

Okay, thanks.

-- 
Tom Rini
http://gate.crashing.org/~trini/