ARM: shmobile: Convert file to use cntvoff

Now that a common function is available for CNTVOFF's
initialization, let's convert shmobile-apmu code to use
this function.

Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/mach-shmobile/common.h

@@ -2,7 +2,6 @@
 #ifndef __ARCH_MACH_COMMON_H
 #define __ARCH_MACH_COMMON_H
 
-extern void shmobile_init_cntvoff(void);
 extern void shmobile_init_delay(void);
 extern void shmobile_boot_vector(void);
 extern unsigned long shmobile_boot_fn;

arch/arm/mach-shmobile/headsmp-apmu.S

@@ -11,29 +11,9 @@
 #include <linux/linkage.h>
 #include <asm/assembler.h>
 
-ENTRY(shmobile_init_cntvoff)
-	/*
-	 * CNTVOFF has to be initialized either from non-secure Hypervisor
-	 * mode or secure Monitor mode with SCR.NS==1. If TrustZone is enabled
-	 * then it should be handled by the secure code
-	 */
-	cps	#MON_MODE
-	mrc	p15, 0, r1, c1, c1, 0		/* Get Secure Config */
-	orr	r0, r1, #1
-	mcr	p15, 0, r0, c1, c1, 0		/* Set Non Secure bit */
-	instr_sync
-	mov	r0, #0
-	mcrr	p15, 4, r0, r0, c14		/* CNTVOFF = 0 */
-	instr_sync
-	mcr	p15, 0, r1, c1, c1, 0		/* Set Secure bit */
-	instr_sync
-	cps	#SVC_MODE
-	ret	lr
-ENDPROC(shmobile_init_cntvoff)
-
 #ifdef CONFIG_SMP
 ENTRY(shmobile_boot_apmu)
-	bl	shmobile_init_cntvoff
+	bl	secure_cntvoff_init
 	b	secondary_startup
 ENDPROC(shmobile_boot_apmu)
 #endif

arch/arm/mach-shmobile/setup-rcar-gen2.c

@@ -26,6 +26,7 @@
 #include <linux/of_fdt.h>
 #include <linux/of_platform.h>
 #include <asm/mach/arch.h>
+#include <asm/secure_cntvoff.h>
 #include "common.h"
 #include "rcar-gen2.h"
 
@@ -70,7 +71,7 @@ void __init rcar_gen2_timer_init(void)
 	void __iomem *base;
 	u32 freq;
 
-	shmobile_init_cntvoff();
+	secure_cntvoff_init();
 
 	if (of_machine_is_compatible("renesas,r8a7745") ||
 	    of_machine_is_compatible("renesas,r8a7792") ||