build the kernel. create a bootable efi image.

build_kernel.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+set -e
+cd "$(dirname "$0")"
+dir=$(dirname "$0")
+echo $dir
+#mkdir -p /tmp/linux
+[[ -d ./linux ]] || git clone --depth 1 https://github.com/torvalds/linux.git ./linux
+cat ./containerfile | /usr/bin/podman build --volume /lib/modules:/lib/modules:z -f - -t kernelbuild:latest .
+#rsync -av ./linux /mnt/tmpfs
+nice -n 20 /usr/bin/podman run -it --volume /lib/modules:/lib/modules:z --volume ./linux:/linux kernelbuild:latest
+cd $dir
+rm -rf initram/
+mkdir -p initram
+mkdir -p initram/{bin,dev,etc,lib,proc,sbin,sys,tmp,usr}
+mkdir -p initram/usr/{bin,sbin}
+mkdir -p initram/etc/{bin,sbin}
+mkdir -p initram/lib/modules/
+cp busybox ./initram/bin/
+#cp ./linux/drivers/block/nbd.ko initram/lib/modules/
+#cp ./linux/modules.builtin initram/lib/modules/
+#cp ./linux/modules.order initram/lib/modules/
+
+chmod +x $dir/initram/bin/busybox
+$dir/initram/bin/busybox --install -s "$dir/initram/bin/"
+cp $dir/init.sh $dir/initram/init
+cp $dir/linux/arch/x86_64/boot/bzImage $dir/bzImage.efi
+chmod +x $dir/initram/init
+cd $dir/initram/
+find .
+find . -print0 | cpio --null -ov --format=newc | gzip -9 > $dir/initramfs.cpio.gz
+