initram: support for booting off a harddisk

initramfs-init

@@ -103,7 +103,7 @@ eend $RC
 
 # load available drivers to get access to modloop media
 ebegin "Loading boot drivers"
-[ "$MODULES" ] && modprobe $MODULES 2> /dev/null
+[ "$MODULES" ] && modprobe -a $MODULES 2> /dev/null
 if [ -f /etc/modules ] ; then
 	sed 's/\#.*//g' < /etc/modules |
 	while read module args; do
@@ -114,6 +114,19 @@ scan_drivers
 scan_drivers
 eend 0
 
+# check if root=... was set
+if [ -n "$KOPT_root" ]; then
+	mount $KOPT_root $NEWROOT
+	cat /proc/mounts | while read DEV DIR TYPE OPTS ; do
+		if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then
+			mkdir -p $NEWROOT/$DIR
+			mount -o move $DIR $NEWROOT/$DIR
+		fi
+	done
+	sync
+	exec /bin/busybox switch_root $NEWROOT $chart_init /sbin/init $KOPT_init_args
+fi
+
 # locate boot media and mount it
 ebegin "Mounting boot media"
 mkdir -p $ALPINE_MNT