diff --git a/bsp/simulator/applications/application.c b/bsp/simulator/applications/application.c
index a16d731295..c899baaa3d 100755
--- a/bsp/simulator/applications/application.c
+++ b/bsp/simulator/applications/application.c
@@ -26,13 +26,15 @@
 #include <stdio.h>
 #include <board.h>
 
+extern int platform_init(void);
+extern int mnt_init(void);
+
 void rt_init_thread_entry(void *parameter)
 {
-#ifdef RT_USING_COMPONENTS_INIT
-    rt_components_init();
-#endif
-
     rt_kprintf("Hello RT-Thread!\n");
+
+    platform_init();
+    mnt_init();
 }
 
 int rt_application_init()
diff --git a/bsp/simulator/applications/mnt.c b/bsp/simulator/applications/mnt.c
index 3a0628e985..e8fc562840 100644
--- a/bsp/simulator/applications/mnt.c
+++ b/bsp/simulator/applications/mnt.c
@@ -15,6 +15,8 @@
 
 int mnt_init(void)
 {
+    dfs_init();
+
 #ifdef RT_USING_DFS_WINSHAREDIR
     dfs_win32_init();
     rt_win_sharedir_init("wshare");
@@ -47,7 +49,7 @@ int mnt_init(void)
     }
 #endif
 
+    return 0;
 }
-INIT_ENV_EXPORT(mnt_init);
 
 #endif
diff --git a/bsp/simulator/applications/platform.c b/bsp/simulator/applications/platform.c
index f79bd6143f..00d4a1b6a0 100644
--- a/bsp/simulator/applications/platform.c
+++ b/bsp/simulator/applications/platform.c
@@ -1,8 +1,12 @@
 #include <rtthread.h>
 #include "board.h"
 
-void platform_init(void)
+#include <shell.h>
+
+int platform_init(void)
 {
+    finsh_system_init();
+
 #ifdef RT_USING_LWIP
 #ifdef RT_USING_TAPNETIF
     tap_netif_hw_init();
@@ -24,5 +28,6 @@ void platform_init(void)
 #endif
 
 #endif /* RT_USING_DFS */
+
+    return 0;
 }
-INIT_DEVICE_EXPORT(platform_init);
diff --git a/bsp/simulator/applications/startup.c b/bsp/simulator/applications/startup.c
index 9745def978..cc2144d64f 100644
--- a/bsp/simulator/applications/startup.c
+++ b/bsp/simulator/applications/startup.c
@@ -1,11 +1,21 @@
 /*
  * File      : startup.c
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006, RT-Thread Develop Team
+ * COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://openlab.rt-thread.com/license/LICENSE
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
@@ -24,12 +34,8 @@
 /*@{*/
 
 extern int  rt_application_init(void);
-#ifdef RT_USING_FINSH
-extern int finsh_system_init(void);
-extern void finsh_set_device(const char *device);
-#endif
-
 extern rt_uint8_t *heap;
+
 /**
  * This function will startup RT-Thread RTOS.
  */
diff --git a/bsp/simulator/rtconfig.h b/bsp/simulator/rtconfig.h
index 2b048a19e0..4a045637bd 100755
--- a/bsp/simulator/rtconfig.h
+++ b/bsp/simulator/rtconfig.h
@@ -99,7 +99,7 @@
 // <bool name="RT_USING_PTHREADS" description="Using POSIX threads library" default="true" />
 // #define RT_USING_PTHREADS
 // <bool name="RT_USING_COMPONENTS_INIT" description="Using automatically component initialization." default="true" />
-#define RT_USING_COMPONENTS_INIT
+// #define RT_USING_COMPONENTS_INIT
 // <bool name="RT_USING_MODULE" description="Enable Moudle Application" default="true" />
 // #define RT_USING_MODULE
 // </section>
diff --git a/bsp/simulator/rtconfig.py b/bsp/simulator/rtconfig.py
index 4aefff78ab..c62b24ea93 100755
--- a/bsp/simulator/rtconfig.py
+++ b/bsp/simulator/rtconfig.py
@@ -67,7 +67,7 @@ if PLATFORM == 'gcc':
     POST_ACTION = ''
 
 elif PLATFORM == 'mingw':
-        # toolchains
+    # toolchains
     PREFIX = ''
     CC      = PREFIX + 'gcc'
     CXX     = PREFIX + 'g++'
@@ -79,11 +79,9 @@ elif PLATFORM == 'mingw':
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY = PREFIX + 'objcopy'
 
-#    DEVICE = ' -ffunction-sections -fdata-sections'
     DEVICE = ''
     CFLAGS = DEVICE + ' -D_Win32 -DNO_OLDNAMES -fno-pic -fno-builtin -fno-exceptions -fno-omit-frame-pointer'
 
-
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
     LFLAGS = DEVICE + ' -static-libgcc  -Wl,--gc-sections,-Map=rtthread-win32.map -T mingw.ld '
     CPATH = ''
@@ -117,7 +115,7 @@ elif PLATFORM == 'cl':
         CFLAGS += ' /MT'
         LFLAGS += ''
 
-    CFLAGS += ' /Zi /Od /W 3 /WL '
+    CFLAGS += ' /Zi /Od /W 3 /WL /D_Win32'
     LFLAGS += ' /SUBSYSTEM:CONSOLE /MACHINE:X86 /INCREMENTAL:NO'
 
     CPATH = ''
diff --git a/include/libc/libc_errno.h b/include/libc/libc_errno.h
index 7b6f302091..b4f4410595 100644
--- a/include/libc/libc_errno.h
+++ b/include/libc/libc_errno.h
@@ -27,7 +27,7 @@
 
 #include <rtconfig.h>
 
-#ifdef RT_USING_NEWLIB
+#if defined(RT_USING_NEWLIB) || defined(_WIN32)
 /* use errno.h file in newlib */
 #include <errno.h>
 #else
diff --git a/include/libc/libc_fcntl.h b/include/libc/libc_fcntl.h
index 68b714b855..fd61b44273 100644
--- a/include/libc/libc_fcntl.h
+++ b/include/libc/libc_fcntl.h
@@ -4,13 +4,18 @@
 #ifndef LIBC_FCNTL_H__
 #define LIBC_FCNTL_H__
 
-#ifdef RT_USING_NEWLIB
+#if defined(RT_USING_NEWLIB) || defined(_WIN32)
 #include <fcntl.h>
 
 #ifndef O_NONBLOCK
 #define O_NONBLOCK    04000
 #endif
 
+#if defined(_WIN32)
+#define O_DIRECTORY 0200000
+#define O_ACCMODE   (_O_RDONLY | _O_WRONLY | _O_RDWR)
+#endif
+
 #else
 #define O_RDONLY         00
 #define O_WRONLY         01
diff --git a/include/libc/libc_fdset.h b/include/libc/libc_fdset.h
index 613b0e9539..386c040206 100644
--- a/include/libc/libc_fdset.h
+++ b/include/libc/libc_fdset.h
@@ -27,7 +27,7 @@
 
 #include <rtconfig.h>
 
-#ifdef RT_USING_NEWLIB
+#if defined(RT_USING_NEWLIB) || defined(_WIN32)
 #include <sys/types.h>
 #else
 
diff --git a/include/libc/libc_ioctl.h b/include/libc/libc_ioctl.h
index 49191a8548..b61866a524 100644
--- a/include/libc/libc_ioctl.h
+++ b/include/libc/libc_ioctl.h
@@ -30,6 +30,7 @@
 #define _IOC_WRITE 1U
 #define _IOC_READ  2U
 
+#ifndef _WIN32
 #define _IO(a,b)    _IOC(_IOC_NONE,(a),(b),0)
 #define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
 #define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
@@ -39,6 +40,7 @@
 #define FIONBIO     _IOW('f', 126, int) /* set/clear non-blocking i/o */
 #define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding
                          * in send queue. */
+#endif
 
 #define TCGETS		0x5401
 #define TCSETS		0x5402
@@ -98,7 +100,11 @@
 
 #define FIONCLEX	0x5450
 #define FIOCLEX		0x5451
+
+#ifndef _WIN32
 #define FIOASYNC	0x5452
+#endif
+
 #define TIOCSERCONFIG	0x5453
 #define TIOCSERGWILD	0x5454
 #define TIOCSERSWILD	0x5455
diff --git a/include/rtlibc.h b/include/rtlibc.h
index da126e67e6..db5236edb1 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -40,7 +40,7 @@ typedef signed long off_t;
 typedef int mode_t;
 #endif
 
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) || defined(_WIN32)
 typedef signed long off_t;
 typedef int mode_t;
 #endif
diff --git a/src/kservice.c b/src/kservice.c
index 7b51f60ca3..f81a8e00f0 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -46,7 +46,7 @@
 /**@{*/
 
 /* global errno in RT-Thread */
-static volatile int _errno;
+static volatile int __rt_errno;
 
 #if defined(RT_USING_DEVICE) && defined(RT_USING_CONSOLE)
 static rt_device_t _console_device = RT_NULL;
@@ -64,12 +64,12 @@ rt_err_t rt_get_errno(void)
     if (rt_interrupt_get_nest() != 0)
     {
         /* it's in interrupt context */
-        return _errno;
+        return __rt_errno;
     }
 
     tid = rt_thread_self();
     if (tid == RT_NULL)
-        return _errno;
+        return __rt_errno;
 
     return tid->error;
 }
@@ -87,7 +87,7 @@ void rt_set_errno(rt_err_t error)
     if (rt_interrupt_get_nest() != 0)
     {
         /* it's in interrupt context */
-        _errno = error;
+        __rt_errno = error;
 
         return;
     }
@@ -95,7 +95,7 @@ void rt_set_errno(rt_err_t error)
     tid = rt_thread_self();
     if (tid == RT_NULL)
     {
-        _errno = error;
+        __rt_errno = error;
 
         return;
     }
@@ -114,13 +114,13 @@ int *_rt_errno(void)
     rt_thread_t tid;
 
     if (rt_interrupt_get_nest() != 0)
-        return (int *)&_errno;
+        return (int *)&__rt_errno;
 
     tid = rt_thread_self();
     if (tid != RT_NULL)
         return (int *) & (tid->error);
 
-    return (int *)&_errno;
+    return (int *)&__rt_errno;
 }
 RTM_EXPORT(_rt_errno);