diff --git a/src/mainboard/sifive/hifive-unleashed/mainboard.c b/src/mainboard/sifive/hifive-unleashed/mainboard.c
index e7f7a40bec..baf44d4486 100644
--- a/src/mainboard/sifive/hifive-unleashed/mainboard.c
+++ b/src/mainboard/sifive/hifive-unleashed/mainboard.c
@@ -13,12 +13,14 @@
  * GNU General Public License for more details.
  */
 
-#include <device/device.h>
-#include <bootblock_common.h>
-#include <timestamp.h>
+#include <arch/io.h>
+#include <console/console.h>
+#include <soc/sdram.h>
+#include <symbols.h>
 
 static void mainboard_enable(struct device *dev)
 {
+	ram_resource(dev, 0, (uintptr_t)_dram/KiB, sdram_size_mb()*KiB);
 }
 
 struct chip_operations mainboard_ops = {
diff --git a/src/soc/sifive/fu540/soc.c b/src/soc/sifive/fu540/soc.c
deleted file mode 100644
index 9405755e37..0000000000
--- a/src/soc/sifive/fu540/soc.c
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2018 Philipp Hug <philipp@hug.cx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-static void soc_enable(struct device *dev)
-{
-	ram_resource(dev, 0, (uintptr_t)_dram/KiB,
-		sdram_size_mb()*KiB);
-}