diff --git a/arch/nds32/lib/cache.c b/arch/nds32/lib/cache.c
index 2706513..e11d300 100644
--- a/arch/nds32/lib/cache.c
+++ b/arch/nds32/lib/cache.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <cpu_func.h>
 #if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
 static inline unsigned long CACHE_SET(unsigned char cache)
 {