diff --git a/arch/arm/cpu/armv7/exynos/lowlevel_init.c b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
index 83e1dcf..43c957b 100644
--- a/arch/arm/cpu/armv7/exynos/lowlevel_init.c
+++ b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
@@ -31,6 +31,7 @@
 #include <asm/arch/tzpc.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/pinmux.h>
+#include <asm/arch/system.h>
 #include "common_setup.h"
 
 /* These are the things we can do during low-level init */
@@ -42,6 +43,62 @@ enum {
 	DO_POWER	= 1 << 4,
 };
 
+#ifdef CONFIG_EXYNOS5420
+/*
+ * Pointer to this function is stored in iRam which is used
+ * for jump and power down of a specific core.
+ */
+static void power_down_core(void)
+{
+	uint32_t tmp, core_id, core_config;
+
+	/* Get the core id */
+	mrc_mpafr(core_id);
+	tmp = core_id & 0x3;
+	core_id = (core_id >> 6) & ~3;
+	core_id |= tmp;
+
+	/* Set the status of the core to low */
+	core_config = (core_id * CORE_CONFIG_OFFSET);
+	core_config += ARM_CORE0_CONFIG;
+	writel(0x0, core_config);
+
+	/* Core enter WFI */
+	wfi();
+}
+
+/*
+ * Configurations for secondary cores are inapt at this stage.
+ * Reconfigure secondary cores. Shutdown and change the status
+ * of all cores except the primary core.
+ */
+static void secondary_cores_configure(void)
+{
+	uint32_t core_id;
+
+	/* Store jump address for power down of secondary cores */
+	writel((uint32_t)&power_down_core, CONFIG_PHY_IRAM_BASE + 0x4);
+
+	/* Need all core power down check */
+	dsb();
+	sev();
+
+	/*
+	 * Power down all cores(secondary) while primary core must
+	 * wait for all cores to go down.
+	 */
+	for (core_id = 1; core_id != CORE_COUNT; core_id++) {
+		while ((readl(ARM_CORE0_STATUS
+			+ (core_id * CORE_CONFIG_OFFSET))
+			& 0xff) != 0x0) {
+			isb();
+			sev();
+		}
+		isb();
+	}
+}
+#endif
+
 int do_lowlevel_init(void)
 {
 	uint32_t reset_status;
@@ -49,6 +106,11 @@ int do_lowlevel_init(void)
 
 	arch_cpu_init();
 
+#ifdef CONFIG_EXYNOS5420
+	/* Reconfigure secondary cores */
+	secondary_cores_configure();
+#endif
+
 	reset_status = get_reset_status();
 
 	switch (reset_status) {
diff --git a/arch/arm/include/asm/arch-exynos/cpu.h b/arch/arm/include/asm/arch-exynos/cpu.h
index 29674ad..f1f9994 100644
--- a/arch/arm/include/asm/arch-exynos/cpu.h
+++ b/arch/arm/include/asm/arch-exynos/cpu.h
@@ -177,6 +177,7 @@
 #define EXYNOS5420_GPIO_PART1_BASE	0x14010000
 #define EXYNOS5420_MIPI_DSIM_BASE	0x14500000
 #define EXYNOS5420_DP_BASE		0x145B0000
+#define EXYNOS5420_INF_REG_BASE		0x10040800
 
 #define EXYNOS5420_USBPHY_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS5420_USBOTG_BASE		DEVICE_NOT_AVAILABLE
@@ -186,6 +187,35 @@
 #define EXYNOS5420_USB3PHY_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS5420_USB_HOST_XHCI_BASE	DEVICE_NOT_AVAILABLE
 
+#define ARM_CORE0_CONFIG		(EXYNOS5420_POWER_BASE + 0x2000)
+#define ARM_CORE0_STATUS		(EXYNOS5420_POWER_BASE + 0x2004)
+#define CORE_CONFIG_OFFSET		0x80
+#define CORE_COUNT			0x8
+
+/*
+ * POWER
+ */
+#define PMU_BASE			EXYNOS5420_POWER_BASE
+#define SW_RST_REG_OFFSET		0x400
+
+#define INF_REG_BASE			EXYNOS5420_INF_REG_BASE
+#define INF_REG0_OFFSET			0x00
+#define INF_REG1_OFFSET			0x04
+#define INF_REG2_OFFSET			0x08
+#define INF_REG3_OFFSET			0x0C
+#define INF_REG4_OFFSET			0x10
+#define INF_REG5_OFFSET			0x14
+#define INF_REG6_OFFSET			0x18
+#define INF_REG7_OFFSET			0x1C
+
+#define PMU_SPARE_BASE			(EXYNOS5420_INF_REG_BASE + 0x100)
+#define PMU_SPARE_0			PMU_SPARE_BASE
+#define PMU_SPARE_1			(PMU_SPARE_BASE + 0x4)
+#define PMU_SPARE_2			(PMU_SPARE_BASE + 0x8)
+#define PMU_SPARE_3			(PMU_SPARE_BASE + 0xc)
+#define RST_FLAG_REG			PMU_SPARE_BASE
+#define RST_FLAG_VAL			0xfcba0d10
+
 #ifndef __ASSEMBLY__
 #include <asm/io.h>
 /* CPU detection macros */
diff --git a/arch/arm/include/asm/arch-exynos/system.h b/arch/arm/include/asm/arch-exynos/system.h
index 4968d3d..86903c3 100644
--- a/arch/arm/include/asm/arch-exynos/system.h
+++ b/arch/arm/include/asm/arch-exynos/system.h
@@ -37,6 +37,93 @@ struct exynos5_sysreg {
 
 #define USB20_PHY_CFG_HOST_LINK_EN	(1 << 0)
 
+#ifdef CONFIG_EXYNOS5420
+/*
+ * Data Synchronization Barrier acts as a special kind of memory barrier.
+ * No instruction in program order after this instruction executes until
+ * this instruction completes. This instruction completes when:
+ * - All explicit memory accesses before this instruction complete.
+ * - All Cache, Branch predictor and TLB maintenance operations before
+ *   this instruction complete.
+ */
+#define dsb() __asm__ __volatile__ ("dsb\n\t" : : );
+
+/*
+ * This instruction causes an event to be signaled to all cores
+ * within a multiprocessor system. If SEV is implemented,
+ * WFE must also be implemented.
+ */
+#define sev() __asm__ __volatile__ ("sev\n\t" : : );
+/*
+ * If the Event Register is not set, WFE suspends execution until
+ * one of the following events occurs:
+ * - an IRQ interrupt, unless masked by the CPSR I-bit
+ * - an FIQ interrupt, unless masked by the CPSR F-bit
+ * - an Imprecise Data abort, unless masked by the CPSR A-bit
+ * - a Debug Entry request, if Debug is enabled
+ * - an Event signaled by another processor using the SEV instruction.
+ * If the Event Register is set, WFE clears it and returns immediately.
+ * If WFE is implemented, SEV must also be implemented.
+ */
+#define wfe() __asm__ __volatile__ ("wfe\n\t" : : );
+
+/* Move 0xd3 value to CPSR register to enable SVC mode */
+#define svc32_mode_en() __asm__ __volatile__				\
+			("@ I&F disable, Mode: 0x13 - SVC\n\t"		\
+			 "msr     cpsr_c, #0x13|0xC0\n\t" : : )
+
+/* Set program counter with the given value */
+#define set_pc(x) __asm__ __volatile__ ("mov     pc, %0\n\t" : : "r"(x))
+
+/* Read Main Id register */
+#define mrc_midr(x) __asm__ __volatile__	\
+			("mrc     p15, 0, %0, c0, c0, 0\n\t" : "=r"(x) : )
+
+/* Read Multiprocessor Affinity Register */
+#define mrc_mpafr(x) __asm__ __volatile__	\
+			("mrc     p15, 0, %0, c0, c0, 5\n\t" : "=r"(x) : )
+
+/* Read System Control Register */
+#define mrc_sctlr(x) __asm__ __volatile__	\
+			("mrc     p15, 0, %0, c1, c0, 0\n\t" : "=r"(x) : )
+
+/* Read Auxiliary Control Register */
+#define mrc_auxr(x) __asm__ __volatile__	\
+			("mrc     p15, 0, %0, c1, c0, 1\n\t" : "=r"(x) : )
+
+/* Read L2 Control register */
+#define mrc_l2_ctlr(x) __asm__ __volatile__	\
+			("mrc     p15, 1, %0, c9, c0, 2\n\t" : "=r"(x) : )
+
+/* Read L2 Auxilliary Control register */
+#define mrc_l2_aux_ctlr(x) __asm__ __volatile__	\
+			("mrc     p15, 1, %0, c15, c0, 0\n\t" : "=r"(x) : )
+
+/* Write System Control Register */
+#define mcr_sctlr(x) __asm__ __volatile__	\
+			("mcr     p15, 0, %0, c1, c0, 0\n\t" : : "r"(x))
+
+/* Write Auxiliary Control Register */
+#define mcr_auxr(x) __asm__ __volatile__	\
+			("mcr     p15, 0, %0, c1, c0, 1\n\t" : : "r"(x))
+
+/* Invalidate all instruction caches to PoU */
+#define mcr_icache(x) __asm__ __volatile__	\
+			("mcr     p15, 0, %0, c7, c5, 0\n\t" : : "r"(x))
+
+/* Invalidate unified TLB */
+#define mcr_tlb(x) __asm__ __volatile__	\
+			("mcr     p15, 0, %0, c8, c7, 0\n\t" : : "r"(x))
+
+/* Write L2 Control register */
+#define mcr_l2_ctlr(x) __asm__ __volatile__	\
+			("mcr     p15, 1, %0, c9, c0, 2\n\t" : : "r"(x))
+
+/* Write L2 Auxilliary Control register */
+#define mcr_l2_aux_ctlr(x) __asm__ __volatile__	\
+			("mcr     p15, 1, %0, c15, c0, 0\n\t" : : "r"(x))
+#endif
+
 void set_usbhost_mode(unsigned int mode);
 void set_system_display_ctrl(void);
 int exynos_lcd_early_init(const void *blob);
