avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/drivers/pinctrl/exynos/pinctrl-exynos7420.c

@@ -0,0 +1,120 @@
+/*
+ * Exynos7420 pinctrl driver.
+ * Copyright (C) 2016 Samsung Electronics
+ * Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <dm/pinctrl.h>
+#include <dm/root.h>
+#include <fdtdec.h>
+#include <asm/arch/pinmux.h>
+#include "pinctrl-exynos.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define	GPD1_OFFSET	0xc0
+
+static struct exynos_pinctrl_config_data serial2_conf[] = {
+	{
+		.offset	= GPD1_OFFSET + PIN_CON,
+		.mask	= 0x00ff0000,
+		.value	= 0x00220000,
+	}, {
+		.offset	= GPD1_OFFSET + PIN_PUD,
+		.mask	= 0x00000f00,
+		.value	= 0x00000f00,
+	},
+};
+
+static int exynos7420_pinctrl_request(struct udevice *dev, int peripheral,
+						int flags)
+{
+	struct exynos_pinctrl_priv *priv = dev_get_priv(dev);
+	unsigned long base = priv->base;
+
+	switch (PERIPH_ID_UART2) {
+	case PERIPH_ID_UART2:
+		exynos_pinctrl_setup_peri(serial2_conf,
+					  ARRAY_SIZE(serial2_conf), base);
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static struct pinctrl_ops exynos7420_pinctrl_ops = {
+	.set_state	= exynos_pinctrl_set_state,
+	.request	= exynos7420_pinctrl_request,
+};
+
+/* pin banks of Exynos7420 pin-controller - BUS0 */
+static const struct samsung_pin_bank_data exynos7420_pin_banks0[] = {
+	EXYNOS_PIN_BANK(5, 0x000, "gpb0"),
+	EXYNOS_PIN_BANK(8, 0x020, "gpc0"),
+	EXYNOS_PIN_BANK(2, 0x040, "gpc1"),
+	EXYNOS_PIN_BANK(6, 0x060, "gpc2"),
+	EXYNOS_PIN_BANK(8, 0x080, "gpc3"),
+	EXYNOS_PIN_BANK(4, 0x0a0, "gpd0"),
+	EXYNOS_PIN_BANK(6, 0x0c0, "gpd1"),
+	EXYNOS_PIN_BANK(8, 0x0e0, "gpd2"),
+	EXYNOS_PIN_BANK(5, 0x100, "gpd4"),
+	EXYNOS_PIN_BANK(4, 0x120, "gpd5"),
+	EXYNOS_PIN_BANK(6, 0x140, "gpd6"),
+	EXYNOS_PIN_BANK(3, 0x160, "gpd7"),
+	EXYNOS_PIN_BANK(2, 0x180, "gpd8"),
+	EXYNOS_PIN_BANK(2, 0x1a0, "gpg0"),
+	EXYNOS_PIN_BANK(4, 0x1c0, "gpg3"),
+};
+
+/* pin banks of Exynos7420 pin-controller - FSYS0 */
+static const struct samsung_pin_bank_data exynos7420_pin_banks1[] = {
+	EXYNOS_PIN_BANK(7, 0x000, "gpr4"),
+};
+
+/* pin banks of Exynos7420 pin-controller - FSYS1 */
+static const struct samsung_pin_bank_data exynos7420_pin_banks2[] = {
+	EXYNOS_PIN_BANK(4, 0x000, "gpr0"),
+	EXYNOS_PIN_BANK(8, 0x020, "gpr1"),
+	EXYNOS_PIN_BANK(5, 0x040, "gpr2"),
+	EXYNOS_PIN_BANK(8, 0x060, "gpr3"),
+};
+
+const struct samsung_pin_ctrl exynos7420_pin_ctrl[] = {
+	{
+		/* pin-controller instance BUS0 data */
+		.pin_banks	= exynos7420_pin_banks0,
+		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks0),
+	}, {
+		/* pin-controller instance FSYS0 data */
+		.pin_banks	= exynos7420_pin_banks1,
+		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks1),
+	}, {
+		/* pin-controller instance FSYS1 data */
+		.pin_banks	= exynos7420_pin_banks2,
+		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks2),
+	},
+};
+
+static const struct udevice_id exynos7420_pinctrl_ids[] = {
+	{ .compatible = "samsung,exynos7420-pinctrl",
+		.data = (ulong)exynos7420_pin_ctrl },
+	{ }
+};
+
+U_BOOT_DRIVER(pinctrl_exynos7420) = {
+	.name		= "pinctrl_exynos7420",
+	.id		= UCLASS_PINCTRL,
+	.of_match	= exynos7420_pinctrl_ids,
+	.priv_auto_alloc_size = sizeof(struct exynos_pinctrl_priv),
+	.ops		= &exynos7420_pinctrl_ops,
+	.probe		= exynos_pinctrl_probe,
+	.flags		= DM_FLAG_PRE_RELOC
+};