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/8dtech/eco5pk/eco5pk.c

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+/*
+ * eco5pk.c - board file for 8D Technology's AM3517 based eco5pk board
+ *
+ * Based on am3517evm.c
+ *
+ * Copyright (C) 2011-2012 8D Technologies inc.
+ * Copyright (C) 2009 Texas Instruments Incorporated
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/emac_defs.h>
+#include <asm/gpio.h>
+#include <i2c.h>
+#include <crc.h>
+#include <asm/mach-types.h>
+#include "eco5pk.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Routine: board_init
+ * Description: Early hardware init.
+ */
+int board_init(void)
+{
+	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
+	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
+
+	gpio_request(30, "RESOUT");
+	gpio_direction_output(30, 1);
+	return 0;
+}
+
+/*
+ * Routine: set_muxconf_regs
+ * Description: Setting up the configuration Mux registers specific to the
+ *		hardware. Many pins need to be moved from protect to primary
+ *		mode.
+ */
+void set_muxconf_regs(void)
+{
+	MUX_ECO5_PK();
+}