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/gaisler/gr_ep2s60/gr_ep2s60.c

@@ -0,0 +1,38 @@
+/*
+ * (C) Copyright 2008
+ * Daniel Hellstrom, daniel@gaisler.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <config.h>
+#include <asm/leon.h>
+
+phys_size_t initdram(int board_type)
+{
+	return 1;
+}
+
+int checkboard(void)
+{
+	puts("Board: EP2S60 GRLIB\n");
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_SMC91111
+	rc = smc91111_initialize(0, CONFIG_SMC91111_BASE);
+#endif
+	return rc;
+}
+#endif