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#!/bin/sh
function run
{
st \
qemu-system-x86_64 \
-kernel "$BIND/$KERNEL_NAME" \
-initrd "$BIND/$INITFS_NAME" \
-append "console=ttyS0" -nographic
}
function initramfs
{
IMG="$(pwd)/$1"
DIR="${IMG%.*}"
mkdir -p $DIR
# get busybox things
install -D $(which busybox) $DIR/bin/busybox
ln -sf busybox $DIR/bin/sh
ln -sf busybox $DIR/bin/dmesg
ln -sf busybox $DIR/bin/mount
# copy the files in bin
mkdir -p "$DIR/usr"
find "$BIND" -maxdepth 1 -mindepth 1 \
! -name "*initramfs*" \
! -name "*kernel*" \
-exec cp -r {} "$DIR/usr" \;
# copy a bunch of kernel modules
MODULES="usbhid usbcore hid"
modinfo -F filename $MODULES | while read mod; do
if [ "$mod" = "(builtin)" ]; then continue; fi
mkdir -p "$DIR/$(dirname $mod)"
# uncompress if compressed
if [[ $mod == *.ko.zst ]]; then
zstd -d -c "$mod" > "$DIR/$(dirname $mod)/$(basename $mod .zst)"
else
cp "$mod" "$DIR/$mod"
fi
done
# make the init script
cat <<EOF > "$DIR/init"
#!/bin/sh
# modproble all modules
for mod in $MODULES; do
modprobe "\$mod"
done
EOF
# append the script written in src/
cat $2 >> "$DIR/init"
chmod +x $DIR/init
# make image and delete folder
(cd $DIR; find . | cpio -H newc -o | gzip > $IMG)
rm -rf $DIR
}
function kernel
{
sudo cp /boot/vmlinuz-linux-lts $1
}
$1 $2 $3
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