Add initrd script for packing virtio-gpu related files

scripts/initrd-image.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/bash
+
+IMG=ext4.img
+KERNEL_VER=$(git -C linux/ tag | sed "s/^v//")
+SRC=linux/out/lib/modules/$KERNEL_VER
+DEST=rootfs/lib/modules/$KERNEL_VER
+
+# Add path of kernel modules to load with dependency file, for example:
+# for example:
+# FILES='kernel/drivers/gpu/drm/drm.ko
+#        modules.dep'
+FILES=''
+
+for file in $FILES; do
+    mkdir -p `dirname $DEST/$file`
+    cp -f $SRC/$file $DEST/$file
+done
+
+cp -r directfb rootfs
+cp target/run.sh rootfs
+
+#  DirectFB-example requires ~60MiB of space
+dd if=/dev/zero of=${IMG} bs=4k count=20000
+mkfs.ext4 -F ${IMG} -d rootfs
+
+rm -rf rootfs
+
+# show image size
+du -h ${IMG}

target/run.sh

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+#!/usr/bin/bash
+
+# Install kernel modules
+if [ -d "/lib/modules/" ]; then
+  mkdir -p /lib/modules/
+  cp -r ./lib/modules/* /lib/modules/
+fi
+
+# Install DirectFB and examples
+cp -r ./usr/local /usr/
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
+export PATH=$PATH:/usr/local/bin/
+
+# Load kernel modules if exists
+# modprobe virtio-gpu