ARM: 6541/1: move sev definition to common system.h include file

sev is used to send wakeup event to other cores in ARMv6K and above.
This has been moved from platform specific part to standard common
ARM header file (asm/system.h). Also introduced wfi() and wfe().

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 1120f18a6b17695e48c37a6b4d1d7e50d306e478..9ab8d7e647376c72d0cb9ae665e03c2d441c3979 100644 (file)
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -119,6 +119,13 @@ extern unsigned int user_debug;
 #define vectors_high() (0)
 #endif
 
+#if __LINUX_ARM_ARCH__ >= 7 ||         \
+       (__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K))
+#define sev()  __asm__ __volatile__ ("sev" : : : "memory")
+#define wfe()  __asm__ __volatile__ ("wfe" : : : "memory")
+#define wfi()  __asm__ __volatile__ ("wfi" : : : "memory")
+#endif
+
 #if __LINUX_ARM_ARCH__ >= 7
 #define isb() __asm__ __volatile__ ("isb" : : : "memory")
 #define dsb() __asm__ __volatile__ ("dsb" : : : "memory")