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/board/emulation/Kconfig

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+#
+# Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+if VENDOR_EMULATION
+
+choice
+	prompt "Mainboard model"
+
+config TARGET_QEMU_X86
+	bool "QEMU x86"
+	help
+	  This is the QEMU emulated x86 board. U-Boot supports running
+	  as a coreboot payload as well as bare boot without coreboot.
+	  There are two types of x86 boards supported by QEMU which are
+	  supported by U-Boot. They are via QEMU '-M pc', an i440FX/PIIX
+	  chipset platform and '-M q35', a Q35/ICH9 chipset platform.
+
+endchoice
+
+source "board/emulation/qemu-x86/Kconfig"
+
+endif

u-boot/board/emulation/qemu-x86/Kconfig

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+if TARGET_QEMU_X86
+
+config SYS_BOARD
+	default "qemu-x86"
+
+config SYS_VENDOR
+	default "emulation"
+
+config SYS_SOC
+	default "qemu"
+
+config SYS_CONFIG_NAME
+	default "qemu-x86"
+
+config SYS_TEXT_BASE
+	default 0xfff00000 if !EFI_STUB
+	default 0x01110000 if EFI_STUB
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select X86_RESET_VECTOR if !EFI_STUB
+	select QEMU
+	select BOARD_ROMSIZE_KB_1024
+
+endif

u-boot/board/emulation/qemu-x86/MAINTAINERS

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+QEMU X86 BOARD
+M:	Bin Meng <bmeng.cn@gmail.com>
+S:	Maintained
+F:	board/emulation/qemu-x86/
+F:	include/configs/qemu-x86.h
+F:	configs/qemu-x86_defconfig

u-boot/board/emulation/qemu-x86/Makefile

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+#
+# Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= start.o

u-boot/board/emulation/qemu-x86/start.S

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+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.globl early_board_init
+early_board_init:
+	jmp	early_board_init_ret