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/arch/arm/include/asm/arch-tegra/wdt.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2016 Avionic Design GmbH
+ * Copyright 2016 Julian Scheel <julian@jusst.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _TEGRA_WDT_H_
+#define _TEGRA_WDT_H_
+
+struct wdt_ctrl {
+	u32 config;
+	u32 status;
+	u32 command;
+	u32 unlock;
+};
+
+#define WDT_CFG_SOURCE_MASK 0xf
+
+#define WDT_CFG_PERIOD_SHIFT 4
+#define WDT_CFG_PERIOD_MASK (0xff << WDT_CFG_PERIOD_SHIFT)
+
+#define WDT_CFG_PMC2CAR_RST_EN (1 << 15)
+
+#define WDT_STS_COUNT_SHIFT 4
+#define WDT_STS_COUNT_MASK (0xff << WDT_STS_COUNT_SHIFT)
+
+#define WDT_CMD_START_COUNTER (1 << 0)
+#define WDT_CMD_DISABLE_COUNTER (1 << 1)
+
+#define WDT_UNLOCK_PATTERN 0xc45a
+
+/* Timer registers */
+struct timer_ctrl {
+	u32 ptv;
+};
+
+#define TIMER_PTV_EN (1 << 31)
+#define TIMER_PTV_PERIODIC (1 << 30)
+
+#endif /* _TEGRA_WDT_H_ */