[PATCH 4.2 058/134] powerpc/boot: Specify ABI v2 when building an LE boot wrapper

From: Greg Kroah-Hartman
Date: Sat Sep 26 2015 - 18:10:20 EST

4.2-stable review patch. If anyone has any objections, please let me know.


From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>

commit 655471f54c2e395ba29ae4156ba0f49928177cc1 upstream.

The kernel does it, not the boot wrapper, which breaks with some
cross compilers that still default to ABI v1.

Fixes: 147c05168fc8 ("powerpc/boot: Add support for 64bit little endian wrapper")
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

arch/powerpc/boot/Makefile | 3 +++
1 file changed, 3 insertions(+)

--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -28,6 +28,9 @@ BOOTCFLAGS += -m64
BOOTCFLAGS += -mbig-endian
+BOOTCFLAGS += -mlittle-endian
+BOOTCFLAGS += $(call cc-option,-mabi=elfv2)

BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc

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