diff --git a/include/lib/cpus/errata_report.h b/include/lib/cpus/errata_report.h
index 7cac77e..efdedf0 100644
--- a/include/lib/cpus/errata_report.h
+++ b/include/lib/cpus/errata_report.h
@@ -30,4 +30,7 @@
 #define ERRATA_APPLIES		1
 #define ERRATA_MISSING		2
 
+/* Macro to get CPU revision code for checking errata version compatibility. */
+#define CPU_REV(r, p)		((r << 4) | p)
+
 #endif /* ERRATA_REPORT_H */