From bbeb9209515989ff47802d4e5d5702178c8e42c4 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Tue, 25 Aug 2015 13:52:09 +0100 Subject: ARM: 8422/1: enable imprecise aborts during early kernel startup This patch adds imprecise abort enable/disable macros and uses them to enable imprecise aborts early when starting the kernel. This helps in tracking down the real cause for such imprecise abort, as they are handled as soon as they occur. Until now those aborts would only be enabled when entering the userspace and as a consequence crash the first userspace process if any abort had been raised during kernel startup. Signed-off-by: Fabrice Gasnier Signed-off-by: Lucas Stach Signed-off-by: Russell King --- arch/arm/include/asm/irqflags.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/arm/include/asm/irqflags.h') diff --git a/arch/arm/include/asm/irqflags.h b/arch/arm/include/asm/irqflags.h index 43908146a5cf..e6b70d9d084e 100644 --- a/arch/arm/include/asm/irqflags.h +++ b/arch/arm/include/asm/irqflags.h @@ -54,6 +54,14 @@ static inline void arch_local_irq_disable(void) #define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc") #define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc") + +#ifndef CONFIG_CPU_V7M +#define local_abt_enable() __asm__("cpsie a @ __sta" : : : "memory", "cc") +#define local_abt_disable() __asm__("cpsid a @ __cla" : : : "memory", "cc") +#else +#define local_abt_enable() do { } while (0) +#define local_abt_disable() do { } while (0) +#endif #else /* @@ -136,6 +144,8 @@ static inline void arch_local_irq_disable(void) : "memory", "cc"); \ }) +#define local_abt_enable() do { } while (0) +#define local_abt_disable() do { } while (0) #endif /* -- cgit v1.2.3