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/lib/cpu.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arcregs.h>
+#include <asm/cache.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_cpu_init(void)
+{
+	timer_init();
+
+	gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	cache_init();
+
+	return 0;
+}
+
+int arch_early_init_r(void)
+{
+	gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
+	return 0;
+}