From a4a18d2b3a9245ac43eec1e2eddd6b929b8f0bb9 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Tue, 11 Dec 2012 13:58:43 +0900 Subject: 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 Signed-off-by: Tomasz Figa Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/exynos-smc.S | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 arch/arm/mach-exynos/exynos-smc.S (limited to 'arch/arm/mach-exynos/exynos-smc.S') 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 + +/* + * 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) -- cgit v1.2.3