Re: [PATCH] arch: Kconfig: Let all little endian architectures define CPU_LITTLE_ENDIAN explicitly

From: Russell King - ARM Linux
Date: Mon Aug 11 2014 - 18:54:08 EST


On Tue, Aug 12, 2014 at 05:18:44AM +0800, Chen Gang wrote:
> x86, ia64, and arm(64) are little endian, and also another architectures
> may be little endian (mips, sh, powerpc, and m32r) which already marked
> CPU_LITTLE_ENDIAN explicitly.

This is incorrect. ARM can be either endian.

arch/arm/mm/Kconfig:

config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
depends on ARCH_SUPPORTS_BIG_ENDIAN
help
Say Y if you plan on running a kernel in big-endian mode.
Note that your board must be properly built and your board
port must properly enable any big-endian related features
of your chipset/board/processor.

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