source: rtems/c/src/lib/libcpu/sh/sh7045/include/null.h @ 8b91282

4.104.114.84.95
Last change on this file since 8b91282 was 4a238002, checked in by Joel Sherrill <joel.sherrill@…>, on 11/18/99 at 21:22:58

Patch from "John M. Mills" <jmills@…> with subsequent cleanup from
Ralf Corsepius <corsepiu@…> 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.
  1. 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
  1. 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
  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*  null.h
2 *
3 *  Null device driver, derived from rtems' stub driver.
4 *
5 *  Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
6 *
7 *  COPYRIGHT (c) 1989-1998.
8 *  On-Line Applications Research Corporation (OAR).
9 *  Copyright assigned to U.S. Government, 1994.
10 *
11 *  The license and distribution terms for this file may be
12 *  found in the file LICENSE in this distribution or at
13 *  http://www.OARcorp.com/rtems/license.html.
14 *
15 *  $Id$
16 */
17
18#ifndef __NULL_DRIVER_h
19#define __NULL_DRIVER_h
20
21#ifdef __cplusplus
22extern "C" {
23#endif
24
25#define DEVNULL_DRIVER_TABLE_ENTRY \
26  { null_initialize, null_open, null_close, null_read, \
27    null_write, null_control }
28
29#define NULL_SUCCESSFUL RTEMS_SUCCESSFUL
30
31rtems_device_driver null_initialize(
32  rtems_device_major_number,
33  rtems_device_minor_number,
34  void *
35);
36
37rtems_device_driver null_open(
38  rtems_device_major_number,
39  rtems_device_minor_number,
40  void *
41);
42
43rtems_device_driver null_close(
44  rtems_device_major_number,
45  rtems_device_minor_number,
46  void *
47);
48
49rtems_device_driver null_read(
50  rtems_device_major_number,
51  rtems_device_minor_number,
52  void *
53);
54
55rtems_device_driver null_write(
56  rtems_device_major_number,
57  rtems_device_minor_number,
58  void *
59);
60
61rtems_device_driver null_control(
62  rtems_device_major_number,
63  rtems_device_minor_number,
64  void *
65);
66
67#ifdef __cplusplus
68}
69#endif
70
71#endif
72/* end of include file */
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