diff --git a/board/renesas/porter/Makefile b/board/renesas/porter/Makefile
index 09c07ef..b0cfb1b 100644
--- a/board/renesas/porter/Makefile
+++ b/board/renesas/porter/Makefile
@@ -7,4 +7,4 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 
-obj-y	:= porter.o qos.o ../rcar-common/common.o
+obj-y	:= porter.o qos.o
diff --git a/board/renesas/porter/porter.c b/board/renesas/porter/porter.c
index 5b1a167..86dea8b 100644
--- a/board/renesas/porter/porter.c
+++ b/board/renesas/porter/porter.c
@@ -47,11 +47,7 @@
 	qos_init();
 }
 
-#define TMU0_MSTP125	(1 << 25)
-#define SDHI0_MSTP314	(1 << 14)
-#define SDHI2_MSTP311	(1 << 11)
-#define SCIF0_MSTP721	(1 << 21)
-#define ETHER_MSTP813	(1 << 13)
+#define TMU0_MSTP125	BIT(25)
 
 #define SD2CKCR		0xE615026C
 #define SD_97500KHZ	0x7
@@ -60,15 +56,6 @@
 {
 	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
 
-	/* SCIF0 */
-	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);
-
-	/* ETHER */
-	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
-
-	/* SDHI  */
-	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SDHI0_MSTP314 | SDHI2_MSTP311);
-
 	/*
 	 * SD0 clock is set to 97.5MHz by default.
 	 * Set SD2 to the 97.5MHz as well.
@@ -78,112 +65,25 @@
 	return 0;
 }
 
-/* LSI pin pull-up control */
-#define PUPR5		0xe6060114
-#define PUPR5_ETH	0x3FFC0000
-#define PUPR5_ETH_MAGIC	(1 << 27)
 int board_init(void)
 {
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 
-	/* Init PFC controller */
-	r8a7791_pinmux_init();
-
-	/* Ether Enable */
-	gpio_request(GPIO_FN_ETH_CRS_DV, NULL);
-	gpio_request(GPIO_FN_ETH_RX_ER, NULL);
-	gpio_request(GPIO_FN_ETH_RXD0, NULL);
-	gpio_request(GPIO_FN_ETH_RXD1, NULL);
-	gpio_request(GPIO_FN_ETH_LINK, NULL);
-	gpio_request(GPIO_FN_ETH_REFCLK, NULL);
-	gpio_request(GPIO_FN_ETH_MDIO, NULL);
-	gpio_request(GPIO_FN_ETH_TXD1, NULL);
-	gpio_request(GPIO_FN_ETH_TX_EN, NULL);
-	gpio_request(GPIO_FN_ETH_TXD0, NULL);
-	gpio_request(GPIO_FN_ETH_MDC, NULL);
-	gpio_request(GPIO_FN_IRQ0, NULL);
-
-	mstp_clrbits_le32(PUPR5, PUPR5, PUPR5_ETH & ~PUPR5_ETH_MAGIC);
-	gpio_request(GPIO_GP_5_22, NULL); /* PHY_RST */
-	mstp_clrbits_le32(PUPR5, PUPR5, PUPR5_ETH_MAGIC);
-
-	gpio_direction_output(GPIO_GP_5_22, 0);
-	mdelay(20);
-	gpio_set_value(GPIO_GP_5_22, 1);
-	udelay(1);
-
 	return 0;
 }
 
-#define CXR24 0xEE7003C0 /* MAC address high register */
-#define CXR25 0xEE7003C8 /* MAC address low register */
-int board_eth_init(bd_t *bis)
+int dram_init(void)
 {
-#ifdef CONFIG_SH_ETHER
-	int ret = -ENODEV;
-	u32 val;
-	unsigned char enetaddr[6];
-
-	ret = sh_eth_initialize(bis);
-	if (!eth_env_get_enetaddr("ethaddr", enetaddr))
-		return ret;
+	if (fdtdec_setup_memory_size() != 0)
+		return -EINVAL;
 
-	/* Set Mac address */
-	val = enetaddr[0] << 24 | enetaddr[1] << 16 |
-		enetaddr[2] << 8 | enetaddr[3];
-	writel(val, CXR24);
-
-	val = enetaddr[4] << 8 | enetaddr[5];
-	writel(val, CXR25);
-
-	return ret;
-#else
 	return 0;
-#endif
-}
-
-int board_mmc_init(bd_t *bis)
-{
-	int ret = -ENODEV;
-
-#ifdef CONFIG_SH_SDHI
-	gpio_request(GPIO_FN_SD0_DATA0, NULL);
-	gpio_request(GPIO_FN_SD0_DATA1, NULL);
-	gpio_request(GPIO_FN_SD0_DATA2, NULL);
-	gpio_request(GPIO_FN_SD0_DATA3, NULL);
-	gpio_request(GPIO_FN_SD0_CLK, NULL);
-	gpio_request(GPIO_FN_SD0_CMD, NULL);
-	gpio_request(GPIO_FN_SD0_CD, NULL);
-	gpio_request(GPIO_FN_SD2_DATA0, NULL);
-	gpio_request(GPIO_FN_SD2_DATA1, NULL);
-	gpio_request(GPIO_FN_SD2_DATA2, NULL);
-	gpio_request(GPIO_FN_SD2_DATA3, NULL);
-	gpio_request(GPIO_FN_SD2_CLK, NULL);
-	gpio_request(GPIO_FN_SD2_CMD, NULL);
-	gpio_request(GPIO_FN_SD2_CD, NULL);
-
-	/* SDHI 0 */
-	gpio_request(GPIO_GP_2_12, NULL);
-	gpio_direction_output(GPIO_GP_2_12, 1); /* 1: 3.3V, 0: 1.8V */
-
-	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI0_BASE, 0,
-			   SH_SDHI_QUIRK_16BIT_BUF);
-	if (ret)
-		return ret;
-
-	/* SDHI 2 */
-	gpio_request(GPIO_GP_2_26, NULL);
-	gpio_direction_output(GPIO_GP_2_26, 1); /* 1: 3.3V, 0: 1.8V */
-
-	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI2_BASE, 2, 0);
-#endif
-	return ret;
 }
 
-int dram_init(void)
+int dram_init_banksize(void)
 {
-	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+	fdtdec_setup_memory_banksize();
 
 	return 0;
 }
@@ -215,14 +115,3 @@
 	val |= 0x02;
 	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
 }
-
-static const struct sh_serial_platdata serial_platdata = {
-	.base = SCIF0_BASE,
-	.type = PORT_SCIF,
-	.clk = CONFIG_P_CLK_FREQ,
-};
-
-U_BOOT_DEVICE(porter_serials) = {
-	.name = "serial_sh",
-	.platdata = &serial_platdata,
-};