Add script for packing kernel modules to image

Author: shengwen-tw

scripts/create-initrd-img.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/bash
+
+IMG=ext4.img
+
+mkdir -p rootfs
+mkdir -p rootfs/modules
+
+MODULES='linux/drivers/i2c/i2c-core.ko 
+         linux/drivers/i2c/algos/i2c-algo-bit.ko 
+         linux/drivers/virtio/virtio_dma_buf.ko 
+         linux/drivers/gpu/drm/drm_kms_helper.ko 
+         linux/drivers/gpu/drm/virtio/virtio-gpu.ko 
+         linux/drivers/gpu/drm/drm.ko 
+         linux/drivers/gpu/drm/drm_shmem_helper.ko 
+         linux/drivers/gpu/drm/drm_panel_orientation_quirks.ko'
+
+for file in $MODULES; do
+    cp $file rootfs/modules
+done
+
+cp scripts/run.sh rootfs
+
+# kernel objects of virtio-gpu and root files requires ~35MiB of space
+dd if=/dev/zero of=${IMG} bs=4k count=9000
+mkfs.ext4 -F ${IMG} -d rootfs
+
+rm -rf rootfs
+
+# show image size
+du -h ${IMG}

scripts/run.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/bash
+
+# Run this script to install virtio-gpu module into
+# the guest Linux system
+
+mkdir -p /lib/modules/$(uname -r)
+cp ./modules/*.ko /lib/modules/$(uname -r)
+
+depmod -a
+modprobe virtio-gpu