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powerpc: Add ability to build little endian kernels

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This patch allows the kbuild system to successfully compile a kernel
for the little endian PowerPC64 architecture. A subsequent patch
will add the CONFIG_CPU_LITTLE_ENDIAN kernel config option which
must be set to build such a kernel.

If cross compiling, CROSS_COMPILE must point to a suitable toolchain
(compiled for the powerpc64le-linux and powerpcle-linux targets).

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Ian Munsie
2013-09-23 12:05:11 +10:00
committed by Benjamin Herrenschmidt
parent 7df697c815
commit d72b080171
4 changed files with 31 additions and 4 deletions
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4
arch/powerpc/kernel/vdso32/vdso32.lds.S
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@@ -4,7 +4,11 @@
*/
#include <asm/vdso.h>
#ifdef __LITTLE_ENDIAN__
OUTPUT_FORMAT("elf32-powerpcle", "elf32-powerpcle", "elf32-powerpcle")
#else
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
#endif
OUTPUT_ARCH(powerpc:common)
ENTRY(_start)

4
arch/powerpc/kernel/vdso64/vdso64.lds.S
View File

@@ -4,7 +4,11 @@
*/
#include <asm/vdso.h>
#ifdef __LITTLE_ENDIAN__
OUTPUT_FORMAT("elf64-powerpcle", "elf64-powerpcle", "elf64-powerpcle")
#else
OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc", "elf64-powerpc")
#endif
OUTPUT_ARCH(powerpc:common64)
ENTRY(_start)