diff --git a/configs/grpeach_defconfig b/configs/grpeach_defconfig
index c204603..f706ee3 100644
--- a/configs/grpeach_defconfig
+++ b/configs/grpeach_defconfig
@@ -13,6 +13,8 @@
 CONFIG_RZA1=y
 CONFIG_SYS_CLK_FREQ=66666666
 CONFIG_SYS_LOAD_ADDR=0x20400000
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20900000
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="ignore_loglevel"