diff --git a/configs/s400_defconfig b/configs/s400_defconfig
index b0e3010..ee855aa 100644
--- a/configs/s400_defconfig
+++ b/configs/s400_defconfig
@@ -11,6 +11,8 @@
 CONFIG_IDENT_STRING=" s400"
 CONFIG_SYS_LOAD_ADDR=0x1000000
 CONFIG_DEBUG_UART=y
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20000000
 CONFIG_REMAKE_ELF=y
 CONFIG_OF_BOARD_SETUP=y
 # CONFIG_DISPLAY_CPUINFO is not set