1 files changed, 57 insertions, 1 deletions
diff --git a/src/include/ipxe/serial.h b/src/include/ipxe/serial.h
index 83be59c31..04347a89e 100644
--- a/src/include/ipxe/serial.h
+++ b/src/include/ipxe/serial.h
@@ -9,8 +9,64 @@
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
+#include <ipxe/api.h>
 #include <ipxe/uart.h>
+#include <config/serial.h>
 
-extern struct uart serial_console;
+#ifdef SERIAL_NULL
+#define SERIAL_PREFIX_null
+#else
+#define SERIAL_PREFIX_null __null_
+#endif
+
+/**
+ * Calculate static inline serial API function name
+ *
+ * @v _prefix		Subsystem prefix
+ * @v _api_func		API function
+ * @ret _subsys_func	Subsystem API function
+ */
+#define SERIAL_INLINE( _subsys, _api_func ) \
+	SINGLE_API_INLINE ( SERIAL_PREFIX_ ## _subsys, _api_func )
+
+/**
+ * Provide a serial API implementation
+ *
+ * @v _prefix		Subsystem prefix
+ * @v _api_func		API function
+ * @v _func		Implementing function
+ */
+#define PROVIDE_SERIAL( _subsys, _api_func, _func ) \
+	PROVIDE_SINGLE_API ( SERIAL_PREFIX_ ## _subsys, _api_func, _func )
+
+/**
+ * Provide a static inline serial API implementation
+ *
+ * @v _prefix		Subsystem prefix
+ * @v _api_func		API function
+ */
+#define PROVIDE_SERIAL_INLINE( _subsys, _api_func ) \
+	PROVIDE_SINGLE_API_INLINE ( SERIAL_PREFIX_ ## _subsys, _api_func )
+
+/**
+ * Get null serial console UART
+ *
+ * @ret uart		Serial console UART, or NULL
+ */
+static inline __always_inline struct uart *
+SERIAL_INLINE ( null, default_serial_console ) ( void ) {
+	return NULL;
+}
+
+/**
+ * Get serial console UART
+ *
+ * @ret uart		Serial console UART, or NULL
+ */
+struct uart * default_serial_console ( void );
+
+extern struct uart *serial_console;
+
+extern struct uart * fixed_serial_console ( void );
 
 #endif /* _IPXE_SERIAL_H */