new file mode 100644
--- /dev/null
+++ b/packages/io/serial/current/include/serialio.h
@@ -0,0 +1,135 @@
+#ifndef CYGONCE_SERIALIO_H
+#define CYGONCE_SERIALIO_H
+// ====================================================================
+//
+//      serialio.h
+//
+//      Device I/O 
+//
+// ====================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
+// License for the specific language governing rights and limitations under
+// the License.
+// 
+// The Original Code is eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+// ====================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   gthomas
+// Contributors:        gthomas
+// Date:        1999-02-04
+// Purpose:     Special support for serial I/O devices
+// Description:
+//
+//####DESCRIPTIONEND####
+//
+// ====================================================================
+
+// This file contains the user-level visible I/O interfaces
+
+#include <pkgconf/hal.h>
+#include <cyg/infra/cyg_type.h>
+#include <cyg/io/config_keys.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Supported baud rates
+typedef enum {
+    CYGNUM_SERIAL_BAUD_50 = 1,
+    CYGNUM_SERIAL_BAUD_75,
+    CYGNUM_SERIAL_BAUD_110,
+    CYGNUM_SERIAL_BAUD_134_5,
+    CYGNUM_SERIAL_BAUD_150,
+    CYGNUM_SERIAL_BAUD_200,
+    CYGNUM_SERIAL_BAUD_300,
+    CYGNUM_SERIAL_BAUD_600,
+    CYGNUM_SERIAL_BAUD_1200,
+    CYGNUM_SERIAL_BAUD_1800,
+    CYGNUM_SERIAL_BAUD_2400,
+    CYGNUM_SERIAL_BAUD_3600,
+    CYGNUM_SERIAL_BAUD_4800,
+    CYGNUM_SERIAL_BAUD_7200,
+    CYGNUM_SERIAL_BAUD_9600,
+    CYGNUM_SERIAL_BAUD_14400,
+    CYGNUM_SERIAL_BAUD_19200,
+    CYGNUM_SERIAL_BAUD_38400,
+    CYGNUM_SERIAL_BAUD_57600,
+    CYGNUM_SERIAL_BAUD_115200,
+    CYGNUM_SERIAL_BAUD_234000
+} cyg_serial_baud_rate_t;
+#define CYGNUM_SERIAL_BAUD_MIN CYGNUM_SERIAL_BAUD_50 
+#define CYGNUM_SERIAL_BAUD_MAX CYGNUM_SERIAL_BAUD_234000
+
+// Note: two levels of macro are required to get proper expansion.
+#define _CYG_SERIAL_BAUD_RATE(n) CYGNUM_SERIAL_BAUD_##n
+#define CYG_SERIAL_BAUD_RATE(n) _CYG_SERIAL_BAUD_RATE(n)
+
+// Stop bit selections
+typedef enum {
+    CYGNUM_SERIAL_STOP_1 = 1,
+    CYGNUM_SERIAL_STOP_1_5,
+    CYGNUM_SERIAL_STOP_2
+} cyg_serial_stop_bits_t;
+
+// Parity modes
+typedef enum {
+    CYGNUM_SERIAL_PARITY_NONE = 0,
+    CYGNUM_SERIAL_PARITY_EVEN,
+    CYGNUM_SERIAL_PARITY_ODD,
+    CYGNUM_SERIAL_PARITY_MARK,
+    CYGNUM_SERIAL_PARITY_SPACE
+} cyg_serial_parity_t;
+
+// Word length
+typedef enum {
+    CYGNUM_SERIAL_WORD_LENGTH_5 = 5,
+    CYGNUM_SERIAL_WORD_LENGTH_6,
+    CYGNUM_SERIAL_WORD_LENGTH_7,
+    CYGNUM_SERIAL_WORD_LENGTH_8
+} cyg_serial_word_length_t;
+
+typedef struct {
+    cyg_serial_baud_rate_t   baud;
+    cyg_serial_stop_bits_t   stop;
+    cyg_serial_parity_t      parity;
+    cyg_serial_word_length_t word_length;
+    cyg_uint32               flags;
+} cyg_serial_info_t;
+
+#define CYG_SERIAL_INFO_INIT(_baud,_stop,_parity,_word_length,_flags) \
+  { _baud, _stop, _parity, _word_length, _flags}
+
+// Control flags
+#define CYG_SERIAL_FLAGS_RTSCTS    0x0001
+
+// Default configuration
+#define CYG_SERIAL_BAUD_DEFAULT        CYGNUM_SERIAL_BAUD_38400
+#define CYG_SERIAL_STOP_DEFAULT        CYGNUM_SERIAL_STOP_1
+#define CYG_SERIAL_PARITY_DEFAULT      CYGNUM_SERIAL_PARITY_NONE
+#define CYG_SERIAL_WORD_LENGTH_DEFAULT CYGNUM_SERIAL_WORD_LENGTH_8
+#define CYG_SERIAL_FLAGS_DEFAULT       0
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* CYGONCE_SERIALIO_H */
+/* EOF serialio.h */