diff --git a/bsp/mini2440/application.c b/bsp/mini2440/application.c
index 946b30ac89213017512ea162f8314a4d14b5bffc..93b6ed8bf3df922a6d95e8f6e0a798243f7418f0 100644
--- a/bsp/mini2440/application.c
+++ b/bsp/mini2440/application.c
@@ -46,7 +46,7 @@ extern void rt_hw_touch_init(void);
 #endif
 
 #ifdef RT_USING_FTK
-#define RT_INIT_THREAD_STACK_SIZE (256*1024)
+#define RT_INIT_THREAD_STACK_SIZE (10*1024)
 #else
 #define RT_INIT_THREAD_STACK_SIZE (2*1024)
 #endif
@@ -117,8 +117,8 @@ void rt_init_thread_entry(void* parameter)
 		rtgui_touch_hw_init();	
 
 		/* re-init device driver */
-		rt_device_init_all();		
-
+		rt_device_init_all();
+		
 		/* enter ftk main */
 		FTK_MAIN(0, NULL);
 	}
diff --git a/bsp/mini2440/startup.c b/bsp/mini2440/startup.c
index e556795b59d95be596c0f3bd93f2a56137ff2d1e..a66af8747dc719c07bd46bcfc186d45ea771b0db 100644
--- a/bsp/mini2440/startup.c
+++ b/bsp/mini2440/startup.c
@@ -112,7 +112,7 @@ void rtthread_startup(void)
 #ifdef __CC_ARM
 	rt_system_heap_init((void*)&Image$$ER_ZI$$ZI$$Limit, (void*)0x34000000);
 #else
-	rt_system_heap_init(&__bss_end, (void*)0x34000000);
+	rt_system_heap_init((void*)0x33000000, (void*)0x34000000);
 #endif
 
 	/* init scheduler system */