diff --git a/board/renesas/common/gen3-common.c b/board/renesas/common/gen3-common.c
new file mode 100644
index 0000000..05b01c8
--- /dev/null
+++ b/board/renesas/common/gen3-common.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * board/renesas/common/gen3-common.c
+ *
+ * Copyright (C) 2013 Renesas Electronics Corporation
+ * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
+ * Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ */
+
+#include <asm/armv8/cpu.h>
+#include <dm.h>
+#include <fdt_support.h>
+#include <hang.h>
+#include <init.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <dm/uclass-internal.h>
+#include <asm/arch/renesas.h>
+#include <linux/libfdt.h>
+
+#ifdef CONFIG_RCAR_64
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* If the firmware passed a device tree use it for e.g. U-Boot DRAM setup. */
+extern u64 rcar_atf_boot_args[];
+
+#define FDT_RPC_PATH	"/soc/spi@ee200000"
+
+static void apply_atf_overlay(void *fdt_blob)
+{
+	void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
+
+	if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
+		fdt_overlay_apply_node(fdt_blob, 0, atf_fdt_blob, 0);
+}
+
+int fdtdec_board_setup(const void *fdt_blob)
+{
+	apply_atf_overlay((void *)fdt_blob);
+
+	return 0;
+}
+
+#define RST_BASE	0xE6160000
+#define RST_CA57RESCNT	(RST_BASE + 0x40)
+#define RST_CA53RESCNT	(RST_BASE + 0x44)
+#define RST_RSTOUTCR	(RST_BASE + 0x58)
+#define RST_CA57_CODE	0xA5A5000F
+#define RST_CA53_CODE	0x5A5A000F
+
+void __weak reset_cpu(void)
+{
+	if (is_cortex_a53())
+		writel(RST_CA53_CODE, RST_CA53RESCNT);
+	else if (is_cortex_a57())
+		writel(RST_CA57_CODE, RST_CA57RESCNT);
+	else
+		hang();
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+static int is_mem_overlap(void *blob, int first_mem_node, int curr_mem_node)
+{
+	struct fdt_resource first_mem_res, curr_mem_res;
+	int curr_mem_reg, first_mem_reg = 0;
+	int ret;
+
+	for (;;) {
+		ret = fdt_get_resource(blob, first_mem_node, "reg",
+				       first_mem_reg++, &first_mem_res);
+		if (ret) /* No more entries, no overlap found */
+			return 0;
+
+		curr_mem_reg = 0;
+		for (;;) {
+			ret = fdt_get_resource(blob, curr_mem_node, "reg",
+					       curr_mem_reg++, &curr_mem_res);
+			if (ret) /* No more entries, check next tuple */
+				break;
+
+			if (curr_mem_res.end < first_mem_res.start)
+				continue;
+
+			if (curr_mem_res.start >= first_mem_res.end)
+				continue;
+
+			log_debug("Overlap found: 0x%llx..0x%llx / 0x%llx..0x%llx\n",
+				  first_mem_res.start, first_mem_res.end,
+				  curr_mem_res.start, curr_mem_res.end);
+
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static void scrub_duplicate_memory(void *blob)
+{
+	/*
+	 * Scrub duplicate /memory@* node entries here. Some R-Car DTs might
+	 * contain multiple /memory@* nodes, however fdt_fixup_memory_banks()
+	 * either generates single /memory node or updates the first /memory
+	 * node. Any remaining memory nodes are thus potential duplicates.
+	 *
+	 * However, it is not possible to delete all the memory nodes right
+	 * away, since some of those might not be DRAM memory nodes, but some
+	 * sort of other memory. Thus, delete only the memory nodes which are
+	 * in the R-Car3 DBSC ranges.
+	 */
+	int mem = 0, first_mem_node = 0;
+
+	for (;;) {
+		mem = fdt_node_offset_by_prop_value(blob, mem,
+						    "device_type", "memory", 7);
+		if (mem < 0)
+			break;
+		if (!fdtdec_get_is_enabled(blob, mem))
+			continue;
+
+		/* First memory node, patched by U-Boot */
+		if (!first_mem_node) {
+			first_mem_node = mem;
+			continue;
+		}
+
+		/* Check the remaining nodes and delete duplicates */
+		if (!is_mem_overlap(blob, first_mem_node, mem))
+			continue;
+
+		/* Delete duplicate node, start again */
+		fdt_del_node(blob, mem);
+		first_mem_node = 0;
+		mem = 0;
+	}
+}
+
+static void update_rpc_status(void *blob)
+{
+	void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
+	int offset, enabled;
+
+	/*
+	 * Check if the DT fragment received from TF-A had its RPC-IF device node
+	 * enabled.
+	 */
+	if (fdt_magic(atf_fdt_blob) != FDT_MAGIC)
+		return;
+
+	offset = fdt_path_offset(atf_fdt_blob, FDT_RPC_PATH);
+	if (offset < 0)
+		return;
+
+	enabled = fdtdec_get_is_enabled(atf_fdt_blob, offset);
+	if (!enabled)
+		return;
+
+	/*
+	 * Find the RPC-IF device node, and enable it if it has a flash subnode.
+	 */
+	offset = fdt_path_offset(blob, FDT_RPC_PATH);
+	if (offset < 0)
+		return;
+
+	if (fdt_subnode_offset(blob, offset, "flash") < 0)
+		return;
+
+	fdt_status_okay(blob, offset);
+}
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	apply_atf_overlay(blob);
+	scrub_duplicate_memory(blob);
+	update_rpc_status(blob);
+
+	return 0;
+}
+#endif
+#endif