diff --git a/.gitignore b/.gitignore
index ea1472ec1..8f0d0d552 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-output/
+buildroot/ccache
diff --git a/buildroot-external/board/ova/barebox.config b/buildroot-external/board/ova/barebox.config
index 5716e7b63..f336bb910 100644
--- a/buildroot-external/board/ova/barebox.config
+++ b/buildroot-external/board/ova/barebox.config
@@ -1,7 +1,11 @@
+# CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_PROMPT="hassio-os:"
+CONFIG_CONSOLE_SIMPLE=y
+CONFIG_PARTITION=y
 CONFIG_DEFAULT_COMPRESSION_LZ4=y
 CONFIG_STATE=y
 CONFIG_BOOTCHOOSER=y
+CONFIG_CLOCKSOURCE_EFI=y
 CONFIG_FS_EXT4=y
 # CONFIG_FS_RAMFS is not set
 CONFIG_FS_FAT=y
diff --git a/buildroot-external/board/ova/kernel.config b/buildroot-external/board/ova/kernel.config
index 5ccac54cf..fe145f576 100644
--- a/buildroot-external/board/ova/kernel.config
+++ b/buildroot-external/board/ova/kernel.config
@@ -18,7 +18,6 @@ CONFIG_CPUSETS=y
 CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
 CONFIG_CGROUP_PERF=y
-CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
 CONFIG_KPROBES=y
@@ -281,3 +280,4 @@ CONFIG_CRYPTO_GCM=y
 CONFIG_CRYPTO_CMAC=y
 CONFIG_CRYPTO_ARC4=y
 # CONFIG_VIRTUALIZATION is not set
+CONFIG_XZ_DEC=y
diff --git a/buildroot-external/configs/ova_defconfig b/buildroot-external/configs/ova_defconfig
index 1c8145034..f6ac59f99 100644
--- a/buildroot-external/configs/ova_defconfig
+++ b/buildroot-external/configs/ova_defconfig
@@ -1,5 +1,6 @@
 BR2_x86_64=y
 BR2_CCACHE=y
+BR2_CCACHE_DIR="$(TOPDIR)/ccache"
 BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
 BR2_GCC_VERSION_7_X=y
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
@@ -11,6 +12,7 @@ BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_HASSIO_PATH)/overlay/"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_HASSIO_PATH)/board/ova/kernel.config"
+BR2_LINUX_KERNEL_LZ4=y
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
 # BR2_PACKAGE_BUSYBOX is not set
 BR2_PACKAGE_ALSA_UTILS=y