[PATCH v3] arch: Kconfig: Let all architectures set endian explicitly

[Vineet Gupta]

On Thursday 14 August 2014 09:55 AM, Chen Gang wrote:
> Normal architectures:
>
>  - Big endian: avr32, frv, m68k, openrisc, parisc, s390, sparc
>
>  - Little endian: alpha, blackfin, cris, hexagon, ia64, metag, mn10300,
>                   score, unicore32, x86
>
>  - Choose in config time: arc, arm, arm64, c6x, m32r, mips, powerpc, sh
>
> Special architectures:
>
>  - Deside by compiler: microblaze, tile, xtensa.
>
>  - Deside by building host: um
>
>  - Next, need improve Kbuild to probe endian to deside whether need mark
>    __BUILDING_TIME_BIG_ENDIAN__ before real config.
>
> Another improvements:
>
>  - score: use '\t' instead of ' '.
>
>  - s390: sort the select value in alpha order.
>
> Signed-off-by: Chen Gang <gang.chen.5i5j at gmail.com>
> ---
>  arch/alpha/Kconfig      |  1 +
>  arch/arc/Kconfig        |  1 +
>  arch/arm/Kconfig        |  1 +
>  arch/arm64/Kconfig      |  1 +
>  arch/avr32/Kconfig      |  1 +
>  arch/blackfin/Kconfig   |  1 +
>  arch/c6x/Kconfig        |  1 +
>  arch/cris/Kconfig       |  1 +
>  arch/frv/Kconfig        |  1 +
>  arch/hexagon/Kconfig    |  1 +
>  arch/ia64/Kconfig       |  1 +
>  arch/m32r/Kconfig       |  1 +
>  arch/m68k/Kconfig       |  1 +
>  arch/metag/Kconfig      |  1 +
>  arch/microblaze/Kconfig |  2 ++
>  arch/mips/Kconfig       |  1 +
>  arch/mn10300/Kconfig    |  1 +
>  arch/openrisc/Kconfig   |  1 +
>  arch/parisc/Kconfig     |  1 +
>  arch/powerpc/Kconfig    |  1 +
>  arch/s390/Kconfig       |  3 ++-
>  arch/score/Kconfig      | 21 +++++++++++----------
>  arch/sparc/Kconfig      |  1 +
>  arch/tile/Kconfig       |  2 ++
>  arch/um/Kconfig.common  |  2 ++
>  arch/unicore32/Kconfig  |  1 +
>  arch/x86/Kconfig        |  1 +
>  arch/xtensa/Kconfig     |  2 ++
>  init/Kconfig            |  6 ++++++
>  29 files changed, 49 insertions(+), 11 deletions(-)
>
> diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
> index b7ff9a3..1cb7426 100644
> --- a/arch/alpha/Kconfig
> +++ b/arch/alpha/Kconfig
> @@ -27,6 +27,7 @@ config ALPHA
>  	select MODULES_USE_ELF_RELA
>  	select ODD_RT_SIGACTION
>  	select OLD_SIGSUSPEND
> +	select CPU_LITTLE_ENDIAN
>  	help
>  	  The Alpha is a 64-bit general-purpose processor designed and
>  	  marketed by the Digital Equipment Corporation of blessed memory,
> diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
> index 9596b0a..e939abd 100644
> --- a/arch/arc/Kconfig
> +++ b/arch/arc/Kconfig
> @@ -35,6 +35,7 @@ config ARC
>  	select OF_EARLY_FLATTREE
>  	select PERF_USE_VMALLOC
>  	select HAVE_DEBUG_STACKOVERFLOW
> +	select CPU_LITTLE_ENDIAN if !CPU_BIG_ENDIAN

It is not clear what exactly are you trying to fix. What doesn't work w/o this
patch !

-Vineet