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/x86/cpu/qemu/car.S

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <asm/post.h>
+
+.globl car_init
+car_init:
+	/* Save the BIST result */
+	movl	%eax, %ebp
+
+	post_code(POST_CAR_START)
+
+	/*
+	 * Since we know we are running inside emulator,
+	 * we can do nothing here for CAR initialization.
+	 */
+
+	/* Restore the BIST result */
+	movl	%ebp, %eax
+
+	post_code(POST_CAR_CPU_CACHE)
+	jmp	car_init_ret