From c5d4752c0541ea0af559250bd2bec6556fed6915 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 4 Mar 2013 13:29:40 +0000 Subject: ARM: implement erratum 716044 workaround Add common code to enable the workaround for ARM erratum 716044. This will be enabled for Tegra. Signed-off-by: Stephen Warren --- arch/arm/cpu/armv7/start.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index fa5fad1..c0e1849 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -310,6 +310,12 @@ ENTRY(cpu_init_cp15) #endif mcr p15, 0, r0, c1, c0, 0 +#ifdef CONFIG_ARM_ERRATA_716044 + mrc p15, 0, r0, c1, c0, 0 @ read system control register + orr r0, r0, #1 << 11 @ set bit #11 + mcr p15, 0, r0, c1, c0, 0 @ write system control register +#endif + #ifdef CONFIG_ARM_ERRATA_742230 mrc p15, 0, r0, c15, c0, 1 @ read diagnostic register orr r0, r0, #1 << 4 @ set bit #4 -- cgit v1.1