diff --git a/conf/machine/rainier.conf b/conf/machine/rainier.conf
index 11188dd..2623791 100644
--- a/conf/machine/rainier.conf
+++ b/conf/machine/rainier.conf
@@ -1,6 +1,7 @@
 KERNEL_DEVICETREE = "aspeed-bmc-ibm-rainier.dtb"
-UBOOT_MACHINE = "ast2600_openbmc_defconfig"
+UBOOT_MACHINE = "ast2600_openbmc_spl_defconfig"
 UBOOT_DEVICETREE = "ast2600-rainier"
+SPL_BINARY = "spl/u-boot-spl.bin"
 
 OBMC_POWER_SUPPLY_INSTANCES = "0 1 2 3"
 
diff --git a/conf/machine/witherspoon-tacoma.conf b/conf/machine/witherspoon-tacoma.conf
index 8f2d362..bd8d711 100644
--- a/conf/machine/witherspoon-tacoma.conf
+++ b/conf/machine/witherspoon-tacoma.conf
@@ -1,6 +1,7 @@
 KERNEL_DEVICETREE = "aspeed-bmc-opp-tacoma.dtb"
-UBOOT_MACHINE = "ast2600_openbmc_defconfig"
+UBOOT_MACHINE = "ast2600_openbmc_spl_defconfig"
 UBOOT_DEVICETREE = "ast2600-tacoma"
+SPL_BINARY = "spl/u-boot-spl.bin"
 
 OBMC_POWER_SUPPLY_INSTANCES = "0 1"