[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 e3d8510..352db98 100644 (file)
--- 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