A new macro for setting/clearing bits in the SCTLR.
Signed-off-by: Leif Lindholm <[email protected]>
Suggested-by: Will Deacon <[email protected]>
Cc: Will Deacon <[email protected]>
---
arch/arm/include/asm/assembler.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 5c22851..e8ca24b 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -383,4 +383,18 @@ THUMB( orr \reg , \reg , #PSR_T_BIT )
#endif
.endm
+#ifdef CONFIG_CPU_CP15
+/* Macro for setting/clearing bits in sctlr */
+ .macro update_sctlr, tmp:req, set=, clear=
+ mrc p15, 0, \tmp, c1, c0, 0
+ .ifnc \set,
+ orr \tmp, \set
+ .endif
+ .ifnc \clear,
+ bic \tmp, \tmp, \clear
+ .endif
+ mcr p15, 0, \tmp, c1, c0, 0
+ .endm
+#endif
+
#endif /* __ASM_ASSEMBLER_H__ */
--
1.7.10.4
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