diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 2a0a7b5ccce..66f82c741ff 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -68,6 +68,10 @@ ifeq ($(CONFIG_DEV_CONSOLE),y)
   HOSTSRCS += up_simuart.c
 endif
 
+ifeq ($(CONFIG_LIB_BOARDCTL),y)
+CSRCS += up_appinit.c
+endif
+
 ifeq ($(CONFIG_NX_LCDDRIVER),y)
   CSRCS += board_lcd.c
 else
diff --git a/arch/sim/src/up_appinit.c b/arch/sim/src/up_appinit.c
new file mode 100644
index 00000000000..714edc7d8ab
--- /dev/null
+++ b/arch/sim/src/up_appinit.c
@@ -0,0 +1,54 @@
+/****************************************************************************
+ * arch/sim/src/up_appinit.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author:  Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ***************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/board.h>
+
+/***************************************************************************
+ * Public Functions
+ ***************************************************************************/
+
+/* Application initialization stub for boardctl() */
+
+#ifdef CONFIG_LIB_BOARDCTL
+int board_app_initialize(void)
+{
+  return 0;
+}
+#endif /* CONFIG_LIB_BOARDCTL */
diff --git a/arch/sim/src/up_head.c b/arch/sim/src/up_head.c
index 2b9fdb45985..28ca4a2745f 100644
--- a/arch/sim/src/up_head.c
+++ b/arch/sim/src/up_head.c
@@ -55,7 +55,7 @@
  ****************************************************************************/
 
 static jmp_buf sim_abort;
-static int retcode = 0;
+static int retcode = EXIT_SUCCESS;
 
 /****************************************************************************
  * Global Functions