init

1 files changed, 31 insertions, 0 deletions

diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..f285004
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,31 @@
+set -e
+
+cd ${0%/*} # go to project root
+
+KERNEL="bin/kernel-$(uname -r)"
+INITRAMFS="bin/initramfs"
+
+mkdir -p bin
+
+# get the kernel
+sudo cp /boot/vmlinuz-linux-lts "$KERNEL"
+
+# initramfs directory
+rm -rf $INITRAMFS
+mkdir -p $INITRAMFS
+
+# copy the init file
+cp src/init $INITRAMFS
+chmod +x $INITRAMFS/init
+
+# get the busybox things
+install -D $(which busybox) $INITRAMFS/bin/busybox
+ln -sf busybox $INITRAMFS/bin/sh
+
+# make the image
+(cd $INITRAMFS; find . | cpio -H newc -o | gzip > ../initramfs.img )
+
+qemu-system-x86_64 \
+     -kernel "$KERNEL" \
+     -initrd "$INITRAMFS.img" \
+     -append "console=ttyS0" -nographic