Re: [PATCH v3] arch: Kconfig: Let all architectures set endian explicitly
From: Max Filippov <jcmvbkbc@gmail.com>
Date: 2014-08-15 01:47:18
Also in:
linux-alpha, linux-mips, linux-um
Hi Chen, On Thu, Aug 14, 2014 at 8:54 PM, Chen Gang [off-list ref] 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.[...]
quoted hunk ↗ jump to hunk
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3a617af..a3e8f7e 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig@@ -22,6 +22,8 @@ config XTENSA select HAVE_IRQ_TIME_ACCOUNTING select HAVE_PERF_EVENTS select COMMON_CLK + select CPU_BIG_ENDIAN if __BUILDING_TIME_BIG_ENDIAN__ + select CPU_LITTLE_ENDIAN if !CPU_BIG_ENDIAN help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both
I've tested this part and it doesn't select neither CPU_BIG_ENDIAN, nor CPU_LITTLE_ENDIAN. And looking into the Kconfig/Kbuild I cound't find anything related to __BUILDING_TIME_BIG_ENDIAN__. Am I missing something? -- Thanks. -- Max