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Commit a4a18d2b authored by Tomasz Figa's avatar Tomasz Figa Committed by Kukjin Kim
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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: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 7366b92a

arch/arm/mach-exynos/Makefile

+5 −0
Original line number Diff line number Diff line
@@ -24,6 +24,11 @@ obj-$(CONFIG_SMP) += platsmp.o headsmp.o 


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

arch/arm/mach-exynos/exynos-smc.S

0 → 100644
+22 −0
Original line number Diff line number Diff line 
/*

 * 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)

arch/arm/mach-exynos/smc.h

0 → 100644
+31 −0
Original line number Diff line number Diff line 
/*

 *  Copyright (c) 2012 Samsung Electronics.

 *

 * EXYNOS - SMC Call

 *

 * 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.

 */



#ifndef __ASM_ARCH_EXYNOS_SMC_H

#define __ASM_ARCH_EXYNOS_SMC_H



#define SMC_CMD_INIT		(-1)

#define SMC_CMD_INFO		(-2)

/* For Power Management */

#define SMC_CMD_SLEEP		(-3)

#define SMC_CMD_CPU1BOOT	(-4)

#define SMC_CMD_CPU0AFTR	(-5)

/* For CP15 Access */

#define SMC_CMD_C15RESUME	(-11)

/* For L2 Cache Access */

#define SMC_CMD_L2X0CTRL	(-21)

#define SMC_CMD_L2X0SETUP1	(-22)

#define SMC_CMD_L2X0SETUP2	(-23)

#define SMC_CMD_L2X0INVALL	(-24)

#define SMC_CMD_L2X0DEBUG	(-25)



extern void exynos_smc(u32 cmd, u32 arg1, u32 arg2, u32 arg3);



#endif