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Message-Id: <1389445524-30623-3-git-send-email-leif.lindholm@linaro.org> Date: Sat, 11 Jan 2014 13:05:21 +0000 From: Leif Lindholm <leif.lindholm@...aro.org> To: linux-kernel@...r.kernel.org Cc: linux-arm-kernel@...ts.infradead.org, linux-efi@...r.kernel.org, matt.fleming@...el.com, roy.franz@...aro.org, msalter@...hat.com, linux@....linux.org.uk, grant.likely@...retlab.ca, patches@...aro.org, Leif Lindholm <leif.lindholm@...aro.org> Subject: [PATCH v4 2/5] arm: add new asm macro update_sctlr A new macro for setting/clearing bits in the SCTLR. Signed-off-by: Leif Lindholm <leif.lindholm@...aro.org> Suggested-by: Will Deacon <will.deacon@....com> --- arch/arm/include/asm/assembler.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 5c22851..aba6458 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -383,4 +383,17 @@ THUMB( orr \reg , \reg , #PSR_T_BIT ) #endif .endm +#ifdef CONFIG_CPU_CP15 +/* Macro for setting/clearing bits in sctlr */ + .macro update_sctlr, set:req, clear:req, tmp:req, tmp2:req + mrc p15, 0, \tmp, c1, c0, 0 + ldr \tmp2, =\set + orr \tmp, \tmp, \tmp2 + ldr \tmp2, =\clear + mvn \tmp2, \tmp2 + and \tmp, \tmp, \tmp2 + mcr p15, 0, \tmp, c1, c0, 0 + .endm +#endif + #endif /* __ASM_ASSEMBLER_H__ */ -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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