diff --git a/bsp/ls1bdev/applications/startup.c b/bsp/ls1bdev/applications/startup.c
index f5c8eddc080c3a0899428c8e97d70a1004f15edf..deedf962f6819f28554928eca660bdf1d1275d5f 100644
--- a/bsp/ls1bdev/applications/startup.c
+++ b/bsp/ls1bdev/applications/startup.c
@@ -54,6 +54,9 @@ void rtthread_startup(void)
     rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x20);
     rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x20);
 
+    invalidate_writeback_dcache_all();
+    invalidate_icache_all();
+
     /* init board */
     rt_hw_board_init();