Index: sys/dev/random/random_harvestq.c
===================================================================
--- sys/dev/random/random_harvestq.c
+++ sys/dev/random/random_harvestq.c
@@ -442,6 +442,31 @@
 			if (bootverbose)
 				printf("random: no preloaded entropy cache\n");
 	}
+
+	/*
+	 * Finally, if no or insufficient early entropy was available to seed
+	 * us, attempt to poll fast random sources until we're seeded.
+	 *
+	 * If none are available, produce a warning and proceed.
+	 */
+	if (!is_random_seeded()) {
+		struct random_sources *rs;
+		unsigned count;
+
+		count = 0;
+		LIST_FOREACH(rs, &source_list, rrs_entries)
+		    count++;
+
+		if (count == 0) {
+			printf("%s: WARNING no early entropy available and no "
+			    "fast random sources available; random will not be"
+			    " available during early boot.\n", __func__);
+			return;
+		}
+
+		while (!is_random_seeded())
+			random_sources_feed();
+	}
 }
 SYSINIT(random_device_prime, SI_SUB_RANDOM, SI_ORDER_FOURTH, random_harvestq_prime, NULL);