From: Mark Rutland <mark.rutland@arm.com>
Date: Thu, 20 Dec 2012 16:52:51 +0000 (+0000)
Subject: Remove unnecessary ldr from boot wrapper
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=fc9e28de1da7c08886ee0cf46d5cbe74ea31b0fe;p=people%2Fjulieng%2Fboot-wrapper-aarch64.git

Remove unnecessary ldr from boot wrapper

We currently do an ldr from GICC_CTLR to w0, then immediately overwrite
w0 with a mov. Reading the GICC_CTLR has no effect on the state of the
GIC, so there's no reason to do the ldr. It's also inconsistent with the
way we set the GICD_CTLR.

Fix this.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
---

diff --git a/boot.S b/boot.S
index a1f25e2..7c28e84 100644
--- a/boot.S
+++ b/boot.S
@@ -49,7 +49,6 @@ _start:
 	str	w0, [x1], #4
 
 2:	ldr	x1, =GIC_CPU_BASE		// GICC_CTLR
-	ldr	w0, [x1]
 	mov	w0, #3				// EnableGrp0 | EnableGrp1
 	str	w0, [x1]