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/arm/mach-zynq/u-boot.lds

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2004-2008 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text :
+	{
+		*(.__image_copy_start)
+		*(.vectors)
+		CPUDIR/start.o (.text*)
+		*(.text*)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	. = ALIGN(4);
+	.data : {
+		*(.data*)
+	}
+
+	. = ALIGN(4);
+
+	. = .;
+
+	. = ALIGN(4);
+	.u_boot_list : {
+		KEEP(*(SORT(.u_boot_list*)));
+	}
+
+	. = ALIGN(4);
+
+	.image_copy_end :
+	{
+		*(.__image_copy_end)
+	}
+
+	.rel_dyn_start :
+	{
+		*(.__rel_dyn_start)
+	}
+
+	.rel.dyn : {
+		*(.rel*)
+	}
+
+	.rel_dyn_end :
+	{
+		*(.__rel_dyn_end)
+	}
+
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
+
+/*
+ * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
+ * __bss_base and __bss_limit are for linker only (overlay ordering)
+ */
+
+	.bss_start __rel_dyn_start (OVERLAY) : {
+		KEEP(*(.__bss_start));
+		__bss_base = .;
+	}
+
+	.bss __bss_base (OVERLAY) : {
+		*(.bss*)
+		 . = ALIGN(4);
+		 __bss_limit = .;
+	}
+
+	.bss_end __bss_limit (OVERLAY) : {
+		KEEP(*(.__bss_end));
+	}
+
+	/*
+	 * Zynq needs to discard these sections because the user
+	 * is expected to pass this image on to tools for boot.bin
+	 * generation that require them to be dropped.
+	 */
+	/DISCARD/ : { *(.dynsym) }
+	/DISCARD/ : { *(.dynbss*) }
+	/DISCARD/ : { *(.dynstr*) }
+	/DISCARD/ : { *(.dynamic*) }
+	/DISCARD/ : { *(.plt*) }
+	/DISCARD/ : { *(.interp*) }
+	/DISCARD/ : { *(.gnu*) }
+	/DISCARD/ : { *(.ARM.exidx*) }
+	/DISCARD/ : { *(.gnu.linkonce.armexidx.*) }
+}