ARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU
authorWill Deacon <will.deacon@arm.com>
Fri, 26 Aug 2011 15:34:51 +0000 (16:34 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 28 Aug 2011 09:39:53 +0000 (10:39 +0100)
commit0f81bb6b051ad760686b5b0fef8c731282c16ef5
tree7af7ac41d68c1bf81a64745880645883c6e17417
parent552e0c8da8ff7099e6fe060cd7ec36ae11f5465b
ARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU

cpu_v7_reset disables the MMU and then branches to the provided address.
On Thumb-2 kernels, we should take care to clear the Thumb Exception
enable bit in the System Control Register, otherwise this may wreak
havok in the code to which we are branching (for example, an ARM kernel
image via kexec).

Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/mm/proc-v7.S