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/arc/cpu/arcv1/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += ivt.o

u-boot/arch/arc/cpu/arcv1/ivt.S

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.section .ivt, "ax",@progbits
+.align 4
+_ivt:
+	/* Critical system events */
+	j	_start			/* 0 - 0x000 */
+	j	memory_error		/* 1 - 0x008 */
+	j	instruction_error	/* 2 - 0x010 */
+
+	/* Device interrupts */
+.rept	29
+	j	interrupt_handler	/* 3:31 - 0x018:0xF8 */
+.endr
+	/* Exceptions */
+	j	EV_MachineCheck		/* 0x100, Fatal Machine check  (0x20) */
+	j	EV_TLBMissI		/* 0x108, Intruction TLB miss  (0x21) */
+	j	EV_TLBMissD		/* 0x110, Data TLB miss        (0x22) */
+	j	EV_TLBProtV		/* 0x118, Protection Violation (0x23)
+							or Misaligned Access  */
+	j	EV_PrivilegeV		/* 0x120, Privilege Violation  (0x24) */
+	j	EV_Trap			/* 0x128, Trap exception       (0x25) */
+	j	EV_Extension		/* 0x130, Extn Intruction Excp (0x26) */

u-boot/arch/arc/cpu/arcv2/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += ivt.o

u-boot/arch/arc/cpu/arcv2/ivt.S

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.section .ivt, "a",@progbits
+.align 4
+	/* Critical system events */
+.word	_start			/* 0 - 0x000 */
+.word	memory_error		/* 1 - 0x008 */
+.word	instruction_error	/* 2 - 0x010 */
+
+	/* Exceptions */
+.word	EV_MachineCheck		/* 0x100, Fatal Machine check  (0x20) */
+.word	EV_TLBMissI		/* 0x108, Intruction TLB miss  (0x21) */
+.word	EV_TLBMissD		/* 0x110, Data TLB miss        (0x22) */
+.word	EV_TLBProtV		/* 0x118, Protection Violation (0x23)
+							or Misaligned Access  */
+.word	EV_PrivilegeV		/* 0x120, Privilege Violation  (0x24) */
+.word	EV_Trap			/* 0x128, Trap exception       (0x25) */
+.word	EV_Extension		/* 0x130, Extn Intruction Excp (0x26) */
+
+	/* Device interrupts */
+.rept	29
+	j	interrupt_handler	/* 3:31 - 0x018:0xF8 */
+.endr

u-boot/arch/arc/cpu/u-boot.lds

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+OUTPUT_FORMAT("elf32-littlearc", "elf32-littlearc", "elf32-littlearc")
+OUTPUT_ARCH(arc)
+ENTRY(_start)
+SECTIONS
+{
+	. = ALIGN(4);
+	.text :	{
+		*(.__text_start)
+		*(.__image_copy_start)
+		arch/arc/lib/start.o (.text*)
+		*(.text*)
+	}
+
+	. = ALIGN(4);
+	.text_end :
+	{
+		*(.__text_end)
+	}
+
+	. = ALIGN(1024);
+	.ivt_start : {
+		*(.__ivt_start)
+	}
+
+	.ivt :
+	{
+		*(.ivt)
+	}
+
+	.ivt_end : {
+		*(.__ivt_end)
+	}
+
+	. = ALIGN(4);
+	.rodata : {
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+	}
+
+	. = ALIGN(4);
+	.data : {
+		*(.data*)
+	}
+
+	. = ALIGN(4);
+	.u_boot_list : {
+		KEEP(*(SORT(.u_boot_list*)));
+	}
+
+	. = ALIGN(4);
+	.rel_dyn_start : {
+		*(.__rel_dyn_start)
+	}
+
+	.rela.dyn : {
+		*(.rela.dyn)
+	}
+
+	.rel_dyn_end : {
+		*(.__rel_dyn_end)
+	}
+
+	. = ALIGN(4);
+	.bss_start : {
+		*(.__bss_start);
+	}
+
+	.bss : {
+		*(.bss*)
+	}
+
+	.bss_end : {
+		*(.__bss_end);
+	}
+
+	. = ALIGN(4);
+	.image_copy_end : {
+		*(.__image_copy_end)
+		*(.__init_end)
+	}
+}