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-tegra20/tegra.h

@@ -0,0 +1,22 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _TEGRA20_H_
+#define _TEGRA20_H_
+
+#define NV_PA_SDRAM_BASE	0x00000000
+#define NV_PA_MC_BASE		0x7000F000
+
+#include <asm/arch-tegra/tegra.h>
+
+#define TEGRA_USB1_BASE		0xC5000000
+
+#define BCT_ODMDATA_OFFSET	4068	/* 12 bytes from end of BCT */
+
+#define MAX_NUM_CPU		2
+
+#endif	/* TEGRA20_H */