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/mach-kirkwood/include/mach/kw88f6281.h

@@ -0,0 +1,23 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * Header file for Feroceon CPU core 88FR131 Based KW88F6281 SOC.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_KW88F6281_H
+#define _ASM_ARCH_KW88F6281_H
+
+/* SOC specific definitions */
+#define KW88F6281_REGS_PHYS_BASE	0xf1000000
+#define KW_REGS_PHY_BASE		KW88F6281_REGS_PHYS_BASE
+
+/* TCLK Core Clock definition */
+#ifndef CONFIG_SYS_TCLK
+#define CONFIG_SYS_TCLK	200000000 /* 200MHz */
+#endif
+
+#endif /* _ASM_ARCH_KW88F6281_H */