1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h
index 280396483f..b4986a23d8 100644
--- a/arch/arm/include/asm/proc-fns.h
+++ b/arch/arm/include/asm/proc-fns.h
@@ -178,6 +178,18 @@ extern void cpu_resume(void);
 	})
 #endif
 
+static inline unsigned int cpu_get_ttbcr(void)
+{
+	unsigned int ttbcr;
+	asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr));
+	return ttbcr;
+}
+
+static inline void cpu_set_ttbcr(unsigned int ttbcr)
+{
+	asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr) : "memory");
+}
+
 #else	/*!CONFIG_MMU */
 
 #define cpu_switch_mm(pgd,mm)	{ }