diff --git a/configs/ls1043ardb_sdcard_defconfig b/configs/ls1043ardb_sdcard_defconfig
index 69a69aa..ddf280a 100644
--- a/configs/ls1043ardb_sdcard_defconfig
+++ b/configs/ls1043ardb_sdcard_defconfig
@@ -29,6 +29,7 @@
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x1000fff0
 CONFIG_REMAKE_ELF=y
+CONFIG_SYS_MONITOR_LEN=1048576
 CONFIG_MP=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y