diff --git a/configs/ls1012afrdm_tfa_defconfig b/configs/ls1012afrdm_tfa_defconfig
index ecc4c81..177fcd4 100644
--- a/configs/ls1012afrdm_tfa_defconfig
+++ b/configs/ls1012afrdm_tfa_defconfig
@@ -22,6 +22,8 @@
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_CMD_GREPENV=y
 CONFIG_CMD_MEMTEST=y
+CONFIG_SYS_MEMTEST_START=0x80000000
+CONFIG_SYS_MEMTEST_END=0x9fffffff
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y