powerpc/boot: Specify ABI v2 when building an LE boot wrapper

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@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index ccc25eddbcb8b2ff8404d66cecbaec1e450f5a51..f5443645ffca81f9e8aff2b747adb10f481c5dc7 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -28,6 +28,9 @@ BOOTCFLAGS    += -m64
 endif
 ifdef CONFIG_CPU_BIG_ENDIAN
 BOOTCFLAGS     += -mbig-endian
+else
+BOOTCFLAGS     += -mlittle-endian
+BOOTCFLAGS     += $(call cc-option,-mabi=elfv2)
 endif
 
 BOOTAFLAGS     := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc