diff --git a/configs/rock5b_defconfig b/configs/rock5b_defconfig
index f898e86c8c..47a7acc083 100644
--- a/configs/rock5b_defconfig
+++ b/configs/rock5b_defconfig
@@ -23,9 +23,15 @@ BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 BR2_LINUX_KERNEL_NEEDS_HOST_PYTHON3=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_RTL_8169=y
+BR2_TARGET_UBOOT_NEEDS_ATF_BL31=y
+BR2_TARGET_UBOOT_NEEDS_ATF_BL31_ELF=y
 BR2_PACKAGE_ROCKCHIP_RKBIN=y
 BR2_PACKAGE_ROCKCHIP_RKBIN_TPL_FILENAME="bin/rk35/rk3588_ddr_lp4_2112MHz_lp5_2736MHz_v1.12.bin"
-BR2_PACKAGE_ROCKCHIP_RKBIN_BL31_FILENAME="bin/rk35/rk3588_bl31_v1.40.elf"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.12"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="rk3588"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_IMAGES="bl31/bl31.elf"
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="250M"