Switch to multiboot2 and improve interrupt management

tools/bochsrc

@@ -0,0 +1,2 @@
+romimage: file=$BXSHARE/BIOS-bochs-latest, options=fastboot
+vgaromimage: file=$BXSHARE/VGABIOS-lgpl-latest

tools/gen_grub_cdrom.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# Ensure to abort on error
+set -e
+
+wai=$(dirname $(readlink -f "$0")) # Current script directory
+outdir="${wai}/../"
+cdrom="${outdir}/cdrom.img"
+isodir="$(mktemp -d)" # Mount point (where the floppy will be mounted temporally
+kernel="$outdir/src/bringelle"
+
+[ ! -e "$kernel" ] && { echo "Bringelle not found!"; exit 1; } 
+
+check_for () {
+    command -v "$1" &>/dev/null || { echo "Command $1 not found!"; exit 1; }
+}
+
+check_for grub-mkconfig
+
+mkdir -p $isodir/boot/grub
+cat <<EOT >> $isodir/boot/grub/grub.cfg
+set timeout=0
+menuentry "kernel" {
+    multiboot2 /boot/bringelle
+    boot
+}
+EOT
+cp $kernel "$isodir/boot/"
+grub-mkrescue -o "$cdrom" $isodir
+
+rm -rf "$isodir"