diff --git a/scripts/refresh-pxe-roms.sh b/scripts/refresh-pxe-roms.sh
index 14d5860..90fc0b3 100755
--- a/scripts/refresh-pxe-roms.sh
+++ b/scripts/refresh-pxe-roms.sh
@@ -21,79 +21,11 @@
 # Usage: Run from root of qemu tree
 # ./scripts/refresh-pxe-roms.sh
 
-QEMU_DIR=$PWD
-ROM_DIR="pc-bios"
-BUILD_DIR="roms/ipxe"
-LOCAL_CONFIG="src/config/local/general.h"
-
-function cleanup ()
-{
-    if [ -n "$SAVED_CONFIG" ]; then
-        cp "$SAVED_CONFIG" "$BUILD_DIR"/"$LOCAL_CONFIG"
-        rm "$SAVED_CONFIG"
-    fi
-    cd "$QEMU_DIR"
-}
-
-function make_rom ()
-{
-    cd "$BUILD_DIR"/src
-
-    BUILD_LOG=$(mktemp)
-
-    echo Building "$2"...
-    make bin/"$1".rom > "$BUILD_LOG" 2>&1
-    if [ $? -ne 0 ]; then
-        echo Build failed
-        tail --lines=100 "$BUILD_LOG"
-        rm "$BUILD_LOG"
-        cleanup
-        exit 1
-    fi
-    rm "$BUILD_LOG"
-
-    cp bin/"$1".rom "$QEMU_DIR"/"$ROM_DIR"/"$2"
-
-    cd "$QEMU_DIR"
-}
-
-if [ ! -d "$QEMU_DIR"/"$ROM_DIR" ]; then
-    echo "error: can't find $ROM_DIR directory," \
-         "run me from the root of the qemu tree"
-    exit 1
+targets="pxerom"
+if test -x "$(which EfiRom 2>/dev/null)"; then
+    targets="$targets efirom"
 fi
 
-if [ ! -d "$BUILD_DIR"/src ]; then
-    echo "error: $BUILD_DIR not populated, try:"
-    echo "  git submodule init $BUILD_DIR"
-    echo "  git submodule update $BUILD_DIR"
-    exit 1
-fi
-
-if [ -e "$BUILD_DIR"/"$LOCAL_CONFIG" ]; then
-    SAVED_CONFIG=$(mktemp)
-    cp "$BUILD_DIR"/"$LOCAL_CONFIG" "$SAVED_CONFIG"
-fi
-
-echo "#undef BANNER_TIMEOUT" > "$BUILD_DIR"/"$LOCAL_CONFIG"
-echo "#define BANNER_TIMEOUT 0" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
-
-IPXE_VERSION=$(cd "$BUILD_DIR" && git describe --tags)
-if [ -z "$IPXE_VERSION" ]; then
-    echo "error: unable to retrieve git version"
-    cleanup
-    exit 1
-fi
-
-echo "#undef PRODUCT_NAME" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
-echo "#define PRODUCT_NAME \"iPXE $IPXE_VERSION\"" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
-
-make_rom 8086100e pxe-e1000.rom
-make_rom 80861209 pxe-eepro100.rom
-make_rom 10500940 pxe-ne2k_pci.rom
-make_rom 10222000 pxe-pcnet.rom
-make_rom 10ec8139 pxe-rtl8139.rom
-make_rom 1af41000 pxe-virtio.rom
-
-echo done
-cleanup
+cd roms
+make -j4 $targets || exit 1
+make clean