diff --git a/include/configs/P2020DS.h b/include/configs/P2020DS.h
index e7cdb92fb055f6c0522bb248c547ba9887145be5..8c7d5287c819f720b5210fb1eeadb1ea1aec53b3 100644
--- a/include/configs/P2020DS.h
+++ b/include/configs/P2020DS.h
@@ -77,8 +77,9 @@
 #define CONFIG_SYS_NUM_ADDR_MAP		16	/* number of TLB1 entries */
 #endif
 
-#define CONFIG_SYS_MEMTEST_START	0x00000000	/* memtest works on */
-#define CONFIG_SYS_MEMTEST_END		0x7fffffff
+#define CONFIG_POST CONFIG_SYS_POST_MEMORY	/* test POST memory test */
+#define CONFIG_SYS_MEMTEST_START	0x00200000	/* memtest works on */
+#define CONFIG_SYS_MEMTEST_END		0x00400000
 #define CONFIG_PANIC_HANG	/* do not reset board on panic */
 
 /*