1 files changed, 31 insertions, 0 deletions
diff --git a/src/mainboard/lowrisc/nexys4ddr/mainboard.c b/src/mainboard/lowrisc/nexys4ddr/mainboard.c
new file mode 100644
index 0000000000..b2ce39886c
--- /dev/null
+++ b/src/mainboard/lowrisc/nexys4ddr/mainboard.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <device/device.h>
+#include <symbols.h>
+
+static void mainboard_enable(device_t dev)
+{
+	/*
+	 * TODO: Get this size from the hardware-supplied configuration string.
+	 */
+	const size_t ram_size = 1*GiB;
+
+	ram_resource(dev, 0, (uintptr_t)_dram / KiB, ram_size / KiB);
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};