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ARM: 6747/1: P2V: Thumb2 support

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Adding Thumb2 support to the runtime patching of the virt_to_phys and
phys_to_virt opcodes.

Tested both the 8-bit and the 16-bit fixups, using different placements
in memory to exercize all code paths.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nicolas Pitre
2011-02-21 06:53:35 +01:00
committed by Russell King
parent 80f0aad77f
commit b511d75d61
2 changed files with 50 additions and 3 deletions
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4
arch/arm/Kconfig
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@@ -194,13 +194,13 @@ config VECTORS_BASE
config ARM_PATCH_PHYS_VIRT
bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on !XIP_KERNEL && !THUMB2_KERNEL && MMU
depends on !XIP_KERNEL && MMU
depends on !ARCH_REALVIEW || !SPARSEMEM
help
Patch phys-to-virt translation functions at runtime according to
the position of the kernel in system memory.
This can only be used with non-XIP, non-Thumb2, MMU kernels where
This can only be used with non-XIP with MMU kernels where
the base of physical memory is at a 16MB boundary.
config ARM_PATCH_PHYS_VIRT_16BIT