Patch from "John M. Mills" <jmills@tga.com> with subsequent cleanup from

Ralf Corsepius <corsepiu@faw.uni-ulm.de> that adds initial Hitachi SH-2
support to RTEMS.  Ralf's comments are:

    Changes:
    ------
    1. SH-Port:
    * Many files renamed.
    * CONSOLE_DEVNAME  and MHZ defines removed from libcpu.
    * console.c moved to libbsp/sh/shared, build in libbsp/sh/<BSP>/console
      applying VPATH.
    * CONSOLE_DEVNAME made BSP-specific, replacement is defined in bsp.h
    * MHZ define replaced with HZ (extendent resolution) in custom/*.cfg
    * -DHZ=HZ  used in bspstart.c, only
    * Makefile variable HZ used in bsp-dependent directories only.

    2. SH1-Port
    * clock-driver rewritten to provide better resolution for odd CPU
      frequencies. This driver is only partially tested on hardware, ie.
      sightly experimental, but I don't expect severe problems with it.
    * Polling SCI-driver added. This driver is experimental and completly
      untested yet. Therefore it is not yet used for the console (/dev/console
      is still pointing to /dev/null, cf. gensh1/bsp.h).
    * minor changes to the timer driver
    * SH1 specific delay()/CPU_delay() now is implemented as a function

    3. SH2-Port
    * Merged
    * IMO, the code is still in its infancy. Therefore I have interspersed
      comments (FIXME) it for items which I think John should look after.
    * sci and console drivers partially rewritten and extended (John, I hope
      you don't mind).
    * Copyright notices are not yet adapted

1 files changed, 85 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/sh/sh7045/include/sci.h b/c/src/lib/libcpu/sh/sh7045/include/sci.h
new file mode 100644
index 0000000000..c18321899c
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7045/include/sci.h
@@ -0,0 +1,85 @@
+/*
+ *  Driver for the sh2 704x on-chip serial devices (sci)
+ *
+ *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
+ *           Bernd Becker (becker@faw.uni-ulm.de)
+ *
+ *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
+ *
+ *  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.
+ * 
+ *
+ *  COPYRIGHT (c) 1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#ifndef _sh_sci_h
+#define _sh_sci_h
+
+#ifdef __cplusplus
+extern"C" {
+#endif
+
+/*
+ * Devices are set to 9600 bps, 8 databits, 1 stopbit, no
+ * parity and asynchronous mode by default. 
+ *
+ * NOTE:
+ *       The onboard serial devices of the SH do not support hardware 
+ *       handshake.
+ */ 
+
+#define DEVSCI_DRIVER_TABLE_ENTRY \
+  { sh_sci_initialize, sh_sci_open, sh_sci_close, sh_sci_read, \
+      sh_sci_write, sh_sci_control }
+
+extern rtems_device_driver sh_sci_initialize(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+extern rtems_device_driver sh_sci_open(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+extern rtems_device_driver sh_sci_close(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+extern rtems_device_driver sh_sci_read(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+extern rtems_device_driver sh_sci_write(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+extern rtems_device_driver sh_sci_control(
+  rtems_device_major_number,
+  rtems_device_minor_number,
+  void *
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif