[U-Boot] [PATCH] arm: lib: memcpy: Do not copy to same address

[Matthias Weisser]

In some cases (e.g. bootm with a elf payload which is already at the right
position) there is a in place copy of data to the same address. Catching this
saves some ms while booting.

Signed-off-by: Matthias Weisser <weisserm at arcor.de>
---
 arch/arm/lib/memcpy.S |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S
index 3b5aeec..f655256 100644
--- a/arch/arm/lib/memcpy.S
+++ b/arch/arm/lib/memcpy.S
@@ -60,6 +60,9 @@
 .globl memcpy
 memcpy:
 
+		cmp	r0, r1
+		moveq	pc, lr
+
 		enter	r4, lr
 
 		subs	r2, r2, #4
-- 
1.7.0.4