ARM: EXYNOS: Add support for secure monitor calls
Some boards use secure monitor calls to communicate with secure
firmware.
This patch adds exynos_smc function which uses smc assembly instruction
to do secure monitor calls.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index d2f6b36..5567bf7 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -24,6 +24,11 @@
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+obj-$(CONFIG_ARCH_EXYNOS) += exynos-smc.o
+
+plus_sec := $(call as-instr,.arch_extension sec,+sec)
+AFLAGS_exynos-smc.o :=-Wa,-march=armv7-a$(plus_sec)
+
# machine support
obj-$(CONFIG_MACH_SMDKC210) += mach-smdkv310.o
