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/arc/config.mk

@@ -0,0 +1,59 @@
+#
+# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifndef CONFIG_CPU_BIG_ENDIAN
+CONFIG_SYS_LITTLE_ENDIAN = 1
+else
+CONFIG_SYS_BIG_ENDIAN = 1
+endif
+
+ifdef CONFIG_SYS_LITTLE_ENDIAN
+ARC_CROSS_COMPILE := arc-linux-
+PLATFORM_LDFLAGS += -EL
+PLATFORM_CPPFLAGS += -mlittle-endian
+endif
+
+ifdef CONFIG_SYS_BIG_ENDIAN
+ARC_CROSS_COMPILE := arceb-linux-
+PLATFORM_LDFLAGS += -EB
+PLATFORM_CPPFLAGS += -mbig-endian
+endif
+
+ifeq ($(CROSS_COMPILE),)
+CROSS_COMPILE := $(ARC_CROSS_COMPILE)
+endif
+
+ifdef CONFIG_ARC_MMU_VER
+CONFIG_MMU = 1
+endif
+
+ifdef CONFIG_CPU_ARC750D
+PLATFORM_CPPFLAGS += -marc700
+endif
+
+ifdef CONFIG_CPU_ARC770D
+PLATFORM_CPPFLAGS += -marc700 -mlock -mswape
+endif
+
+ifdef CONFIG_CPU_ARCEM6
+PLATFORM_CPPFLAGS += -marcem
+endif
+
+ifdef CONFIG_CPU_ARCHS34
+PLATFORM_CPPFLAGS += -mcpu=archs
+endif
+
+ifdef CONFIG_CPU_ARCHS38
+PLATFORM_CPPFLAGS += -mcpu=archs
+endif
+
+PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -gdwarf-2
+
+# Needed for relocation
+LDFLAGS_FINAL += -pie
+
+# Load address for standalone apps
+CONFIG_STANDALONE_LOAD_ADDR ?= 0x82000000