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authorTomasz Figa <t.figa@samsung.com>2012-12-11 13:58:43 +0900
committerKukjin Kim <kgene.kim@samsung.com>2013-04-09 01:52:06 +0900
commita4a18d2b3a9245ac43eec1e2eddd6b929b8f0bb9 (patch)
tree5634def39dfa0acb7b2ae911ed51663da47166da /arch/arm/mach-exynos/exynos-smc.S
parent7366b92a77fc00357294819bb495896d7482f30c (diff)
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>
Diffstat (limited to 'arch/arm/mach-exynos/exynos-smc.S')
-rw-r--r--arch/arm/mach-exynos/exynos-smc.S22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/exynos-smc.S b/arch/arm/mach-exynos/exynos-smc.S
new file mode 100644
index 000000000000..2e27aa3813fd
--- /dev/null
+++ b/arch/arm/mach-exynos/exynos-smc.S
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics.
+ *
+ * Copied from omap-smc.S Copyright (C) 2010 Texas Instruments, Inc.
+ *
+ * This program is free software,you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/linkage.h>
+
+/*
+ * Function signature: void exynos_smc(u32 cmd, u32 arg1, u32 arg2, u32 arg3)
+ */
+
+ENTRY(exynos_smc)
+ stmfd sp!, {r4-r11, lr}
+ dsb
+ smc #0
+ ldmfd sp!, {r4-r11, pc}
+ENDPROC(exynos_smc)