[PATCH 01/18] powerpc: Add ability to build little endian kernels

[Josh Boyer]

On Fri, Oct 1, 2010 at 5:18 AM, Kumar Gala <galak at kernel.crashing.org> wrote:
>
> On Oct 1, 2010, at 2:05 AM, Ian Munsie wrote:
>
>>
>> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
>> index d361f81..074ff12 100644
>> --- a/arch/powerpc/platforms/Kconfig.cputype
>> +++ b/arch/powerpc/platforms/Kconfig.cputype
>> @@ -329,3 +329,19 @@ config CHECK_CACHE_COHERENCY
>>       bool
>>
>> endmenu
>> +
>> +config ARCH_SUPPORTS_LITTLE_ENDIAN
>> +     bool
>> +
>> +config CPU_LITTLE_ENDIAN
>> +     bool "Build little endian kernel"
>> +     depends on ARCH_SUPPORTS_LITTLE_ENDIAN && EXPERIMENTAL
>> +     default n
>> +     help
>> +       This option selects whether a big endian or little endian kernel will
>> +       be built.
>> +
>> +       Note that if building a little endian kernel, CROSS_COMPILE must
>> +       point to a toolchain capable of targetting little endian powerpc,
>> +       while the toolchain specified by CROSS32_COMPILE must be capable of
>> +       targetting *BIG* endian PowerPC.
>> --
>> 1.7.1
>
> Shouldn't we have something that limits to the sub-arch'es that actually support it?  I doubt I'm ever going to make FSL-Book-e support LE.

Yes, it should.

josh