[U-Boot] [PATCH v3 23/26] Makefile: use "arm64" architecture for U-Boot image files

[Andre Przywara <andre.przywara@arm.com>]

At the moment we use the arch/arm directory for arm64 boards as well,
so the Makefile will pick up the "arm" name for the architecture to use
for tagging binaries in U-Boot image files.
Differentiate between the two by looking at the CPU variable being defined
to "armv8", and use the arm64 architecture name on creating the image
file if that matches.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 Makefile | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index dfed58b..749fc5d 100644
--- a/Makefile
+++ b/Makefile
@@ -923,13 +923,18 @@ quiet_cmd_cpp_cfg = CFG     $@
 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
 	-DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
 
+ifeq ($(CPU),armv8)
+IH_ARCH := arm64
+else
+IH_ARCH := $(ARCH)
+endif
 ifdef CONFIG_SPL_LOAD_FIT
-MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
+MKIMAGEFLAGS_u-boot.img = -f auto -A $(IH_ARCH) -T firmware -C none -O u-boot \
 	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
 	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
 else
-MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
+MKIMAGEFLAGS_u-boot.img = -A $(IH_ARCH) -T firmware -C none -O u-boot \
 	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 endif
-- 
2.8.2