ARM: EXYNOS: Enable l2 configuration through device tree

This patch enables calling generic l2 setup functions if device tree is used.
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos/common.c

@@ -47,6 +47,8 @@
 #include <plat/regs-serial.h>
 
 #include "common.h"
+#define L2_AUX_VAL 0x7C470001
+#define L2_AUX_MASK 0xC200ffff
 
 static const char name_exynos4210[] = "EXYNOS4210";
 static const char name_exynos4212[] = "EXYNOS4212";
@@ -443,6 +445,14 @@ core_initcall(exynos4_core_init);
 #ifdef CONFIG_CACHE_L2X0
 static int __init exynos4_l2x0_cache_init(void)
 {
+	int ret;
+	ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
+	if (!ret) {
+		l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+		clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+		return 0;
+	}
+
 	if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
 		l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
 		/* TAG, Data Latency Control: 2 cycles */
@@ -476,8 +486,7 @@ static int __init exynos4_l2x0_cache_init(void)
 		clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
 	}
 
-	l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
-
+	l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
 	return 0;
 }