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-rw-r--r--include/asm-arm/system.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index f60faccf01f..e160aeb0138 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -173,6 +173,26 @@ static inline void set_copro_access(unsigned int val)
extern unsigned long cr_no_alignment; /* defined in entry-armv.S */
extern unsigned long cr_alignment; /* defined in entry-armv.S */
+#ifndef CONFIG_SMP
+static inline void adjust_cr(unsigned long mask, unsigned long set)
+{
+ unsigned long flags, cr;
+
+ mask &= ~CR_A;
+
+ set &= mask;
+
+ local_irq_save(flags);
+
+ cr_no_alignment = (cr_no_alignment & ~mask) | set;
+ cr_alignment = (cr_alignment & ~mask) | set;
+
+ set_cr((get_cr() & ~mask) | set);
+
+ local_irq_restore(flags);
+}
+#endif
+
#define UDBG_UNDEFINED (1 << 0)
#define UDBG_SYSCALL (1 << 1)
#define UDBG_BADABORT (1 << 2)