diff --git a/util/autoport/bd82x6x.go b/util/autoport/bd82x6x.go
index c1a9c5f..3e47117 100644
--- a/util/autoport/bd82x6x.go
+++ b/util/autoport/bd82x6x.go
@@ -358,6 +358,10 @@
 	guessedMap := GuessSPDMap(ctx)
 
 	sb.WriteString(`
+void mainboard_early_init(int s3resume)
+{
+}
+
 /* FIXME: Put proper SPD map here. */
 void mainboard_get_spd(spd_raw_data *spd)
 {