diff --git a/include/common.h b/include/common.h
index 0edc778..64f49db 100644
--- a/include/common.h
+++ b/include/common.h
@@ -56,6 +56,31 @@
 } while (0)
 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
 
+
+#define __WARN() do { 								\
+	printf("WARNING: at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__);	\
+} while (0)
+
+#ifndef WARN_ON
+#define WARN_ON(condition) ({						\
+	int __ret_warn_on = !!(condition);				\
+	if (unlikely(__ret_warn_on))					\
+		__WARN();						\
+	unlikely(__ret_warn_on);					\
+})
+#endif
+
+#ifndef WARN
+#define WARN(condition, format...) ({					\
+	int __ret_warn_on = !!(condition);				\
+	if (unlikely(__ret_warn_on))					\
+		__WARN();						\
+		puts("WARNING: ");					\
+		printf(format);						\
+	unlikely(__ret_warn_on);					\
+})
+#endif
+
 typedef void (interrupt_handler_t)(void *);
 
 #include <asm/barebox.h> /* boot information for Linux kernel */