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/lib/memcpy-700.S

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2014 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.global memcpy
+.align 4
+memcpy:
+	or	%r3, %r0, %r1
+	asl_s	%r3, %r3, 30
+	mov_s	%r5, %r0
+	brls.d	%r2, %r3, .Lcopy_bytewise
+	sub.f	%r3, %r2, 1
+	ld_s	%r12, [%r1, 0]
+	asr.f	%lp_count, %r3, 3
+	bbit0.d	%r3, 2, .Lnox4
+	bmsk_s	%r2, %r2, 1
+	st.ab	%r12, [%r5, 4]
+	ld.a	%r12, [%r1, 4]
+.Lnox4:
+	lppnz	.Lendloop
+	ld_s	%r3, [%r1, 4]
+	st.ab	%r12, [%r5, 4]
+	ld.a	%r12, [%r1, 8]
+	st.ab	%r3, [%r5, 4]
+.Lendloop:
+	breq	%r2, 0, .Last_store
+	ld	%r3, [%r5, 0]
+#ifdef __LITTLE_ENDIAN__
+	add3	%r2, -1, %r2
+	/* uses long immediate */
+	xor_s	%r12, %r12, %r3
+	bmsk	%r12, %r12, %r2
+	xor_s	%r12, %r12, %r3
+#else /* __BIG_ENDIAN__ */
+	sub3	%r2, 31, %r2
+	/* uses long immediate */
+	xor_s	%r3, %r3, %r12
+	bmsk	%r3, %r3, %r2
+	xor_s	%r12, %r12, %r3
+#endif /* _ENDIAN__ */
+.Last_store:
+	j_s.d	[%blink]
+	st	%r12, [%r5, 0]
+
+	.balign	4
+.Lcopy_bytewise:
+	jcs	[%blink]
+	ldb_s	%r12, [%r1, 0]
+	lsr.f	%lp_count, %r3
+	bhs_s	.Lnox1
+	stb.ab	%r12, [%r5, 1]
+	ldb.a	%r12, [%r1, 1]
+.Lnox1:
+	lppnz	.Lendbloop
+	ldb_s	%r3, [%r1, 1]
+	stb.ab	%r12, [%r5, 1]
+	ldb.a	%r12, [%r1, 2]
+	stb.ab	%r3, [%r5, 1]
+.Lendbloop:
+	j_s.d	[%blink]
+	stb	%r12, [%r5, 0]