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, 87 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/sh/sh7045/include/io_types.h b/c/src/lib/libcpu/sh/sh7045/include/io_types.h
new file mode 100644
index 0000000000..18ba181143
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7045/include/io_types.h
@@ -0,0 +1,87 @@
+/************************************************************************
+ *
+ *  Data types and constants for Hitachi SH704X on-chip peripherals
+ *
+ *  Author: John M.Mills (jmills@tga.com)
+ *
+ *  COPYRIGHT (c) 1999, TGA Technologies, Norcross, GA, USA
+ *
+ *  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.
+ *
+ *  This file may be distributed as part of the RTEMS software item.
+ *
+ *  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.
+ *
+ *	John M. Mills (jmills@tga.com)
+ *	TGA Technologies, Inc.
+ *  100 Pinnacle Way, Suite 140
+ *	Norcross, GA 30071 U.S.A.
+ *
+ *	This modified file may be copied and distributed in accordance
+ *	the above-referenced license. It is provided for critique and
+ *	developmental purposes without any warranty nor representation
+ *	by the authors or by TGA Technologies.
+ *
+ *  $Id$
+ *
+ *
+ ************************************************************************/
+ 
+#ifndef _sh_io_types_h
+#define _sh_io_types_h
+ 
+#include <rtems/score/iosh7045.h>
+#include <termios.h>
+
+typedef enum {SCI0, SCI1} portNo;
+typedef enum {eight, seven} dataBits;
+typedef enum {one, two} stopBits;
+typedef enum {even, odd} parity;
+
+typedef struct {
+	portNo		line;
+	int				speed_ix;
+	dataBits	dBits;
+	int				parEn;	
+	parity		par;
+	int				mulPro;
+	stopBits	sBits;
+} sci_setup_t;
+
+typedef union{
+	unsigned char Reg;         /* By Register */
+	struct {                   /* By  Field */
+		 unsigned char Sync  :1; /* Async/Sync */
+		 unsigned char DBts  :1; /* Char.Length */
+		 unsigned char ParEn :1; /* Parity En.*/
+		 unsigned char Odd   :1; /* Even/Odd */
+		 unsigned char SBts  :1; /* No.Stop Bits */
+		 unsigned char MulP  :1; /* Multi-Proc. */
+		 unsigned char Dvsr  :2; /* Clock Sel. */
+	} Fld;
+} sci_smr_t;
+
+typedef union {
+	unsigned char Reg;          /*  By Register */
+	struct {                    /*  By Field */
+		 unsigned char TIE :1;    /*  Tx.Int.En. */
+		 unsigned char RIE :1;    /*  Rx.Int.En. */
+		 unsigned char TE  :1;    /*  Tx.En. */
+		 unsigned char RE  :1;    /*  Rx.En. */
+		 unsigned char MPIE:1;    /*  Mult.Pro.Int.En. */
+		 unsigned char TEIE:1;    /*  Tx.End Int.En. */
+		 unsigned char CkSrc :2;   /*  Clock Src. */
+	} Fld;
+} sci_scr_t;
+
+typedef struct {
+  unsigned char n ;
+  unsigned char N ;
+} sci_bitrate_t;
+
+#endif /* _sh_io_types_h */
+