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/include/configs/sun50i.h

@@ -0,0 +1,25 @@
+/*
+ * Configuration settings for the Allwinner A64 (sun50i) CPU
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * A64 specific configuration
+ */
+
+#define CONFIG_SUNXI_USB_PHYS	1
+
+#define COUNTER_FREQUENCY	CONFIG_TIMER_CLK_FREQ
+#define GICD_BASE		0x1c81000
+#define GICC_BASE		0x1c82000
+
+/*
+ * Include common sunxi configuration where most the settings are
+ */
+#include <configs/sunxi-common.h>
+
+#endif /* __CONFIG_H */