diff --git a/test/system.c b/test/system.c
new file mode 100644
index 0000000..3b5a9bd
--- /dev/null
+++ b/test/system.c
@@ -0,0 +1,106 @@
+/*
+ * MBox Daemon Test File
+ *
+ * Copyright 2017 IBM
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <linux/types.h>
+#include <mtd/mtd-user.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "linux/aspeed-lpc-ctrl.h"
+
+static struct aspeed_lpc_ctrl_mapping ctrl = {
+};
+
+static struct mtd_info_user mtd = {
+	.type = MTD_NORFLASH,
+	.flags = MTD_WRITEABLE,
+};
+
+void system_set_reserved_size(uint32_t size)
+{
+	ctrl.size = size;
+}
+
+void system_set_mtd_sizes(uint32_t size, uint32_t erasesize)
+{
+	mtd.size = size;
+	mtd.erasesize = erasesize;
+	mtd.writesize = erasesize;
+}
+
+int ioctl(int fd, unsigned long request, ...)
+{
+	int rc = 0;
+	va_list ap;
+
+	switch (request) {
+	case MEMGETINFO:
+	{
+		struct mtd_info_user *info;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct mtd_info_user *);
+		memcpy(info, &mtd, sizeof(mtd));
+		va_end(ap);
+		break;
+	}
+	case MEMERASE:
+	{
+		struct erase_info_user *info;
+		uint8_t *map;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct erase_info_user *);
+
+		if (info->start + info->length > mtd.size)
+			return -1;
+
+		map = mmap(NULL, mtd.size, PROT_WRITE, MAP_SHARED, fd, 0);
+		if (map == MAP_FAILED)
+			return -1;
+
+		memset(&map[info->start], 0xff, info->length);
+		munmap(map, mtd.size);
+
+		va_end(ap);
+		break;
+	}
+	case ASPEED_LPC_CTRL_IOCTL_GET_SIZE:
+	{
+		struct aspeed_lpc_ctrl_mapping *info;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct aspeed_lpc_ctrl_mapping *);
+		info->size = mtd.size;
+		va_end(ap);
+		break;
+	}
+	case ASPEED_LPC_CTRL_IOCTL_MAP:
+		break;
+	default:
+		printf("ioctl() called with unhandled request 0x%08lx\n", request);
+		rc = -1;
+		break;
+	}
+
+	return rc;
+}