source: rtems/bsps/include/libchip/m48t08.h @ 2afb22b

5
Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

  • The make preinstall step itself needs time and disk space.
  • Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error.
  • There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult.
  • The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit.
  • An introduction of a new build system is difficult.
  • Include paths specified by the -B option are system headers. This may suppress warnings.
  • The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

  • cpukit/include
  • cpukit/score/cpu/@RTEMS_CPU@/include
  • cpukit/libnetworking

The new BSP include directories are:

  • bsps/include
  • bsps/@RTEMS_CPU@/include
  • bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.
  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 *  This file contains the definitions for the following real-time clocks:
3 *
4 *    + Mostek M48T08
5 *    + Mostek M48T18
6 *    + Dallas Semiconductor DS1643
7 *
8 *  COPYRIGHT (c) 1989-1999.
9 *  On-Line Applications Research Corporation (OAR).
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.rtems.org/license/LICENSE.
14 */
15
16#ifndef __LIBCHIP_M48T08_h
17#define __LIBCHIP_M48T08_h
18
19/*
20 *  Register indices
21 */
22
23#define M48T08_CONTROL     0
24#define M48T08_SECOND      1
25#define M48T08_MINUTE      2
26#define M48T08_HOUR        3
27#define M48T08_DAY_OF_WEEK 4
28#define M48T08_DATE        5
29#define M48T08_MONTH       6
30#define M48T08_YEAR        7
31
32/*
33 *  Driver function table
34 */
35
36extern rtc_fns m48t08_fns;
37
38/*
39 * Default register access routines
40 */
41
42uint32_t   m48t08_get_register(     /* registers are at 1 byte boundaries */
43  uintptr_t   ulCtrlPort,           /*   and accessed as bytes            */
44  uint8_t     ucRegNum
45);
46
47void  m48t08_set_register(
48  uintptr_t   ulCtrlPort,
49  uint8_t     ucRegNum,
50  uint32_t    ucData
51);
52
53uint32_t   m48t08_get_register_2(   /* registers are at 2 byte boundaries */
54  uintptr_t   ulCtrlPort,           /*   and accessed as bytes            */
55  uint8_t     ucRegNum
56);
57
58void  m48t08_set_register_2(
59  uintptr_t   ulCtrlPort,
60  uint8_t     ucRegNum,
61  uint32_t    ucData
62);
63
64uint32_t   m48t08_get_register_4(   /* registers are at 4 byte boundaries */
65  uintptr_t   ulCtrlPort,           /*   and accessed as bytes            */
66  uint8_t     ucRegNum
67);
68
69void  m48t08_set_register_4(
70  uintptr_t   ulCtrlPort,
71  uint8_t     ucRegNum,
72  uint32_t    ucData
73);
74
75uint32_t   m48t08_get_register_8(   /* registers are at 8 byte boundaries */
76  uintptr_t   ulCtrlPort,           /*   and accessed as bytes            */
77  uint8_t     ucRegNum
78);
79
80void  m48t08_set_register_8(
81  uintptr_t   ulCtrlPort,
82  uint8_t     ucRegNum,
83  uint32_t    ucData
84);
85
86#endif
87/* end of include file */
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