From: Catalin Marinas <catalin.marinas@arm.com>
Date: Wed, 6 Jul 2005 22:06:03 +0000 (+0100)
Subject: [PATCH] ARM: 2789/1: Enable access to both CP10 and CP11 on ARMv6
X-Git-Tag: v2.6.13-rc3~314^2~3
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=d1d890edace65721e9a7582545c943f67f500709;p=linux-2.6-omap-h63xx.git

[PATCH] ARM: 2789/1: Enable access to both CP10 and CP11 on ARMv6

Patch from Catalin Marinas

The VFP instructions trigger undefined exceptions because the access to
CP11 is disabled (only CP10 is currently enabled by the kernel). The patch
fixes this problem.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index e3d8510f434..352db98ee26 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -200,7 +200,7 @@ __v6_setup:
 	mcr	p15, 0, r4, c2, c0, 1		@ load TTB1
 #ifdef CONFIG_VFP
 	mrc	p15, 0, r0, c1, c0, 2
-	orr	r0, r0, #(3 << 20)
+	orr	r0, r0, #(0xf << 20)
 	mcr	p15, 0, r0, c1, c0, 2		@ Enable full access to VFP
 #endif
 	mrc	p15, 0, r0, c1, c0, 0		@ read control register