diff --git a/console-server.h b/console-server.h
new file mode 100644
index 0000000..c084321
--- /dev/null
+++ b/console-server.h
@@ -0,0 +1,46 @@
+
+struct console;
+
+#include <poll.h>
+#include <stdint.h>
+
+enum {
+	HANDLER_OK = 0,
+	HANDLER_EXIT,
+};
+
+struct handler {
+	const char	*name;
+	int		(*init)(struct handler *handler,
+				struct console *console);
+	int		(*init_poll)(struct handler *hander,
+				struct pollfd *pollfd);
+	int		(*poll_event)(struct handler *handler,
+				int events);
+	int		(*data_in)(struct handler *handler,
+				uint8_t *buf, size_t len);
+	void		(*fini)(struct handler *handler);
+};
+
+#define __handler_name(n) __handler_  ## n
+#define  _handler_name(n) __handler_name(n)
+
+#define console_register_handler(h) \
+	static const \
+		__attribute__((section("handlers"))) \
+		__attribute__((used)) \
+		struct handler * _handler_name(__COUNTER__) = h;
+
+int console_data_out(struct console *console, const uint8_t *data, size_t len);
+
+/* utils */
+int write_buf_to_fd(int fd, const uint8_t *buf, size_t len);
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+
+#define offsetof(type, member) \
+	((unsigned long)&((type *)NULL)->member)
+
+#define container_of(ptr, type, member) \
+	((type *)((void *)((ptr) - offsetof(type, member))))
+