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/dts/.gitignore

@@ -0,0 +1 @@
+*.dtb

u-boot/arch/arc/dts/Makefile

@@ -0,0 +1,17 @@
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+dtb-$(CONFIG_TARGET_AXS101) +=  axs10x.dtb
+dtb-$(CONFIG_TARGET_ARCANGEL4) +=  arcangel4.dtb
+dtb-$(CONFIG_TARGET_TB100) +=  abilis_tb100.dtb
+
+targets += $(dtb-y)
+
+DTC_FLAGS += -R 4 -p 0x1000
+
+PHONY += dtbs
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+	@:
+
+clean-files := *.dtb

u-boot/arch/arc/dts/abilis_tb100.dts

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com)
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	aliases {
+		console = &uart0;
+	};
+
+	uart0: serial@ff100000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0xff100000 0x1000>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+	};
+};

u-boot/arch/arc/dts/arcangel4.dts

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com)
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	aliases {
+		console = &arcuart0;
+	};
+
+	arcuart0: serial@0xc0fc1000 {
+		compatible = "snps,arc-uart";
+		reg = <0xc0fc1000 0x100>;
+		clock-frequency = <80000000>;
+	};
+
+};

u-boot/arch/arc/dts/axs10x.dts

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2015 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	aliases {
+		console = &uart0;
+	};
+
+	clocks {
+		apbclk: apbclk {
+			compatible = "fixed-clock";
+			clock-frequency = <50000000>;
+			#clock-cells = <0>;
+		};
+	};
+
+	uart0: serial0@e0022000 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0xe0022000 0x1000>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+	};
+
+	ethernet@e0018000 {
+		#interrupt-cells = <1>;
+		compatible = "altr,socfpga-stmmac";
+		reg = < 0xe0018000 0x2000 >;
+		interrupts = < 25 >;
+		interrupt-names = "macirq";
+		phy-mode = "gmii";
+		snps,pbl = < 32 >;
+		clocks = <&apbclk>;
+		clock-names = "stmmaceth";
+		max-speed = <100>;
+	};
+
+	ehci@0xe0040000 {
+		compatible = "generic-ehci";
+		reg = < 0xe0040000 0x100 >;
+		interrupts = < 8 >;
+	};
+
+	ohci@0xe0060000 {
+		compatible = "generic-ohci";
+		reg = < 0xe0060000 0x100 >;
+		interrupts = < 8 >;
+	};
+};

u-boot/arch/arc/dts/skeleton.dtsi

@@ -0,0 +1,13 @@
+/*
+ * Skeleton device tree; the bare minimum needed to boot; just include and
+ * add a compatible value.  The bootloader will typically populate the memory
+ * node.
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	chosen { };
+	aliases { };
+	memory { device_type = "memory"; reg = <0 0>; };
+};