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/nds32/config.mk

@@ -0,0 +1,22 @@
+#
+# (C) Copyright 2000-2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2011
+# Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
+# Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+
+ifeq ($(CROSS_COMPILE),)
+CROSS_COMPILE := nds32le-linux-
+endif
+
+CONFIG_STANDALONE_LOAD_ADDR = 0x300000 \
+			      -T $(srctree)/examples/standalone/nds32.lds
+
+PLATFORM_RELFLAGS	+= -fno-strict-aliasing -fno-common -mrelax
+PLATFORM_RELFLAGS	+= -gdwarf-2
+PLATFORM_CPPFLAGS	+= -D__nds32__ -G0 -ffixed-10 -fpie
+
+LDFLAGS_u-boot		= --gc-sections --relax