diff --git a/Targets/LS2K/ls2k/ddr_dir/ddr_config_define.h b/Targets/LS2K/ls2k/ddr_dir/ddr_config_define.h
index d3ae9a24..8e1e3b6c 100644
--- a/Targets/LS2K/ls2k/ddr_dir/ddr_config_define.h
+++ b/Targets/LS2K/ls2k/ddr_dir/ddr_config_define.h
@@ -141,7 +141,7 @@ temparary used in PROBE_DIMM
 #define MC_NODE_ID_3        (3)
 
 #ifdef  loongson3A3
-#define LOCK_SCACHE_CONFIG_BASE_ADDR 0x900000003ff00200
+#define LOCK_SCACHE_CONFIG_BASE_ADDR 0xffffffffbfe10200
 #define L1XBAR_CONFIG_BASE_ADDR 0x900000003ff02000
 #define L2XBAR_CONFIG_BASE_ADDR 0x900000003ff00000
 #define CHIP_CONFIG_ADDR        0x900000001fe00180