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/common/spl/spl_onenand.c

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2013
+ * ISEE 2007 SL - Enric Balletbo i Serra <eballetbo@iseebcn.com>
+ *
+ * Based on common/spl/spl_nand.c
+ * Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <config.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <onenand_uboot.h>
+
+int spl_onenand_load_image(void)
+{
+	struct image_header *header;
+	int ret;
+
+	debug("spl: onenand\n");
+
+	/*use CONFIG_SYS_TEXT_BASE as temporary storage area */
+	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
+	/* Load u-boot */
+	onenand_spl_load_image(CONFIG_SYS_ONENAND_U_BOOT_OFFS,
+		CONFIG_SYS_ONENAND_PAGE_SIZE, (void *)header);
+	ret = spl_parse_image_header(header);
+	if (ret)
+		return ret;
+	onenand_spl_load_image(CONFIG_SYS_ONENAND_U_BOOT_OFFS,
+		spl_image.size, (void *)spl_image.load_addr);
+
+	return 0;
+}