diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index 96e2b74..e795492 100644
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -28,6 +28,8 @@
 #include <asm/arch/crm_regs.h>
 #include <asm/arch/mxc_hdmi.h>
 #include <i2c.h>
+#include <input.h>
+#include <netdev.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 #define GP_USB_OTG_PWR	IMX_GPIO_NR(3, 22)
@@ -70,12 +72,12 @@
 	return 0;
 }
 
-iomux_v3_cfg_t const uart1_pads[] = {
+static iomux_v3_cfg_t const uart1_pads[] = {
 	MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
 	MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
 };
 
-iomux_v3_cfg_t const uart2_pads[] = {
+static iomux_v3_cfg_t const uart2_pads[] = {
 	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
 	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
 };
@@ -83,7 +85,7 @@
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 
 /* I2C1, SGTL5000 */
-struct i2c_pads_info i2c_pad_info0 = {
+static struct i2c_pads_info i2c_pad_info0 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
 		.gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
@@ -97,7 +99,7 @@
 };
 
 /* I2C2 Camera, MIPI */
-struct i2c_pads_info i2c_pad_info1 = {
+static struct i2c_pads_info i2c_pad_info1 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
 		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
@@ -111,7 +113,7 @@
 };
 
 /* I2C3, J15 - RGB connector */
-struct i2c_pads_info i2c_pad_info2 = {
+static struct i2c_pads_info i2c_pad_info2 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
 		.gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
@@ -133,7 +135,7 @@
 	MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 };
 
-iomux_v3_cfg_t const usdhc3_pads[] = {
+static iomux_v3_cfg_t const usdhc3_pads[] = {
 	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
@@ -143,7 +145,7 @@
 	MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 };
 
-iomux_v3_cfg_t const usdhc4_pads[] = {
+static iomux_v3_cfg_t const usdhc4_pads[] = {
 	MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
@@ -153,7 +155,7 @@
 	MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 };
 
-iomux_v3_cfg_t const enet_pads1[] = {
+static iomux_v3_cfg_t const enet_pads1[] = {
 	MX6_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
@@ -180,7 +182,7 @@
 	MX6_PAD_ENET_RXD0__GPIO1_IO27		| MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
-iomux_v3_cfg_t const enet_pads2[] = {
+static iomux_v3_cfg_t const enet_pads2[] = {
 	MX6_PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
@@ -198,7 +200,7 @@
 };
 
 /* wl1271 pads on nitrogen6x */
-iomux_v3_cfg_t const wl12xx_pads[] = {
+static iomux_v3_cfg_t const wl12xx_pads[] = {
 	(MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
 		| MUX_PAD_CTRL(WEAK_PULLDOWN),
 	(MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
@@ -246,7 +248,7 @@
 	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
 }
 
-iomux_v3_cfg_t const usb_pads[] = {
+static iomux_v3_cfg_t const usb_pads[] = {
 	MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
@@ -280,7 +282,7 @@
 #endif
 
 #ifdef CONFIG_FSL_ESDHC
-struct fsl_esdhc_cfg usdhc_cfg[2] = {
+static struct fsl_esdhc_cfg usdhc_cfg[2] = {
 	{USDHC3_BASE_ADDR},
 	{USDHC4_BASE_ADDR},
 };
@@ -331,7 +333,7 @@
 #endif
 
 #ifdef CONFIG_MXC_SPI
-iomux_v3_cfg_t const ecspi1_pads[] = {
+static iomux_v3_cfg_t const ecspi1_pads[] = {
 	/* SS1 */
 	MX6_PAD_EIM_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
 	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
@@ -339,7 +341,7 @@
 	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 };
 
-void setup_spi(void)
+static void setup_spi(void)
 {
 	imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
 					 ARRAY_SIZE(ecspi1_pads));