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/powerpc/cpu/ppc4xx/Makefile

@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+extra-y	:= resetvec.o
+extra-y	+= start.o
+
+obj-y	:= cache.o
+obj-y	+= dcr.o
+obj-y	+= kgdb.o
+
+obj-y	+= 40x_spd_sdram.o
+
+obj-y	+= 44x_spd_ddr.o
+obj-$(CONFIG_SDRAM_PPC4xx_IBM_DDR2) += 44x_spd_ddr2.o
+obj-$(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) += 4xx_ibm_ddr2_autocalib.o
+obj-y	+= 4xx_pci.o
+obj-y	+= 4xx_pcie.o
+obj-y	+= bedbug_405.o
+obj-$(CONFIG_CMD_CHIP_CONFIG)	+= cmd_chip_config.o
+obj-y	+= cpu.o
+obj-y	+= cpu_init.o
+obj-y	+= denali_data_eye.o
+obj-y	+= denali_spd_ddr2.o
+obj-y	+= ecc.o
+obj-$(CONFIG_CMD_ECCTEST) += cmd_ecctest.o
+obj-y	+= fdt.o
+obj-y	+= interrupts.o
+obj-$(CONFIG_CMD_REGINFO) += reginfo.o
+obj-y	+= sdram.o
+obj-y	+= speed.o
+obj-y	+= tlb.o
+obj-y	+= traps.o
+obj-y	+= usb.o
+obj-y	+= usb_ohci.o
+obj-$(CONFIG_XILINX_440) += xilinx_irq.o
+ifndef CONFIG_XILINX_440
+obj-y	+= 4xx_uart.o
+obj-y	+= gpio.o
+obj-y	+= miiphy.o
+obj-y	+= uic.o
+endif
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl_boot.o
+endif