diff --git a/common.h b/common.h
index 90eccff..66ca22e 100644
--- a/common.h
+++ b/common.h
@@ -19,7 +19,7 @@
 
 #include <stddef.h> /* offsetof */
 
-/** flat function argument as unused */
+/** flag function argument as unused */
 #ifdef UNUSED
 #elif defined(__GNUC__)
 #	define UNUSED(x) UNUSED_ ## x __attribute__((unused))
@@ -40,68 +40,4 @@
 /** shortcut to printf to stderr */
 #define errf(...)	fprintf(stderr, __VA_ARGS__)
 
-/*
- * list
- */
-
-/** a list hook */
-struct list_entry {
-	struct list_entry *prev;
-	struct list_entry *next;
-};
-
-/** initialize an empty list hook */
-static inline void list_init(struct list_entry *self)
-{
-	self->prev = self->next = self;
-}
-
-/** puts an entry between two other on a list */
-static inline void list_inject(struct list_entry *l,
-			       struct list_entry *prev,
-			       struct list_entry *next)
-{
-	l->prev = prev;
-	l->next = next;
-
-	next->prev = l;
-	prev->next = l;
-}
-
-#define list_insert(H, E)	list_inject((E), (H), (H)->next)
-#define list_append(H, E)	list_inject((E), (H)->prev, (H))
-
-/** removes an entry for the list where it's contained */
-static inline void list_remove(struct list_entry *l)
-{
-	struct list_entry *prev = l->prev, *next = l->next;
-	next->prev = prev;
-	prev->next = next;
-}
-
-/** returns first element of a list */
-static inline struct list_entry *list_first(struct list_entry *l)
-{
-	return (l->next == l) ? NULL : l->next;
-}
-
-/** returns last element of a list */
-static inline struct list_entry *list_last(struct list_entry *l)
-{
-	return (l->prev == l) ? NULL : l->prev;
-}
-
-/** returns next element on a list */
-static inline struct list_entry *list_next(struct list_entry *l,
-					   struct list_entry *e)
-{
-	return (e->next == l) ? NULL : e->next;
-}
-
-/** is list empty? */
-static inline int list_empty(struct list_entry *l)
-{
-	return (l->prev == l);
-}
-
-#endif
+#endif /* _SUNXI_TOOLS_COMMON_H */
diff --git a/include/list.h b/include/list.h
new file mode 100644
index 0000000..88185ce
--- /dev/null
+++ b/include/list.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2012  Alejandro Mery <amery@geeks.cl>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _SUNXI_TOOLS_LIST_H
+#define _SUNXI_TOOLS_LIST_H
+
+/*
+ * list
+ */
+
+/** a list hook */
+struct list_entry {
+	struct list_entry *prev;
+	struct list_entry *next;
+};
+
+/** initialize an empty list hook */
+static inline void list_init(struct list_entry *self)
+{
+	self->prev = self->next = self;
+}
+
+/** puts an entry between two other on a list */
+static inline void list_inject(struct list_entry *l,
+			       struct list_entry *prev,
+			       struct list_entry *next)
+{
+	l->prev = prev;
+	l->next = next;
+
+	next->prev = l;
+	prev->next = l;
+}
+
+#define list_insert(H, E)	list_inject((E), (H), (H)->next)
+#define list_append(H, E)	list_inject((E), (H)->prev, (H))
+
+/** removes an entry for the list where it's contained */
+static inline void list_remove(struct list_entry *l)
+{
+	struct list_entry *prev = l->prev, *next = l->next;
+	next->prev = prev;
+	prev->next = next;
+}
+
+/** returns first element of a list */
+static inline struct list_entry *list_first(struct list_entry *l)
+{
+	return (l->next == l) ? NULL : l->next;
+}
+
+/** returns last element of a list */
+static inline struct list_entry *list_last(struct list_entry *l)
+{
+	return (l->prev == l) ? NULL : l->prev;
+}
+
+/** returns next element on a list */
+static inline struct list_entry *list_next(struct list_entry *l,
+					   struct list_entry *e)
+{
+	return (e->next == l) ? NULL : e->next;
+}
+
+/** is list empty? */
+static inline int list_empty(struct list_entry *l)
+{
+	return (l->prev == l);
+}
+
+#endif /* _SUNXI_TOOLS_LIST_H */
diff --git a/script.h b/script.h
index e4c1ada..b4c2aad 100644
--- a/script.h
+++ b/script.h
@@ -17,6 +17,8 @@
 #ifndef _SUNXI_TOOLS_SCRIPT_H
 #define _SUNXI_TOOLS_SCRIPT_H
 
+#include "list.h"
+
 #define GPIO_BANK_MAX	13 /* N */
 
 /** head of the data tree */