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| author | Dave Martin <dave.martin@linaro.org> | 2011-03-04 15:33:53 +0000 |
|---|---|---|
| committer | Kevin Hilman <khilman@ti.com> | 2011-03-09 16:38:35 -0800 |
| commit | 85243a762457f7891ae525df39ad44323b3eeea6 (patch) | |
| tree | 479c3c60549f6f5e3af6ddfd9b8ca7153e43f3d7 /arch/arm | |
| parent | 2de0baefaa7f2fad221bba6049e389e39990e2f0 (diff) | |
| download | blackbird-op-linux-85243a762457f7891ae525df39ad44323b3eeea6.tar.gz blackbird-op-linux-85243a762457f7891ae525df39ad44323b3eeea6.zip | |
ARM: omap4: Provide do_wfi() for Thumb-2
For CONFIG_THUMB2_KERNEL, the existing definition of do_wfi() will
insert invalid code into the instruction stream.
Any assembler which can assemble Thumb-2 is guaranteed to accept
the "wfi" mnemonic, so for the Thumb-2 case, just use the mnemonic.
The ARM case is left as-is.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/include/mach/omap4-common.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/include/mach/omap4-common.h b/arch/arm/mach-omap2/include/mach/omap4-common.h index 5b0270b28934..de441c05a6a6 100644 --- a/arch/arm/mach-omap2/include/mach/omap4-common.h +++ b/arch/arm/mach-omap2/include/mach/omap4-common.h @@ -17,8 +17,12 @@ * wfi used in low power code. Directly opcode is used instead * of instruction to avoid mulit-omap build break */ +#ifdef CONFIG_THUMB2_KERNEL +#define do_wfi() __asm__ __volatile__ ("wfi" : : : "memory") +#else #define do_wfi() \ __asm__ __volatile__ (".word 0xe320f003" : : : "memory") +#endif #ifdef CONFIG_CACHE_L2X0 extern void __iomem *l2cache_base; |
