source: rtems/bsps/arm/lpc32xx/include/bsp/hsu.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: 1.2 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup lpc32xx_hsu
5 *
6 * @brief HSU support API.
7 */
8
9/*
10 * Copyright (c) 2010-2014 embedded brains GmbH.  All rights reserved.
11 *
12 *  embedded brains GmbH
13 *  Dornierstr. 4
14 *  82178 Puchheim
15 *  Germany
16 *  <rtems@embedded-brains.de>
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.org/license/LICENSE.
21 */
22
23#ifndef LIBBSP_ARM_LPC32XX_HSU_H
24#define LIBBSP_ARM_LPC32XX_HSU_H
25
26#include <rtems/termiostypes.h>
27
28#ifdef __cplusplus
29extern "C" {
30#endif /* __cplusplus */
31
32/**
33 * @defgroup lpc32xx_hsu HSU Support
34 *
35 * @ingroup arm_lpc32xx
36 *
37 * @brief HSU Support
38 *
39 * @{
40 */
41
42typedef struct {
43  uint32_t fifo;
44  uint32_t level;
45  uint32_t iir;
46  uint32_t ctrl;
47  uint32_t rate;
48} lpc32xx_hsu;
49
50typedef struct {
51  rtems_termios_device_context base;
52  volatile lpc32xx_hsu *hsu;
53  size_t chars_in_transmission;
54  rtems_vector_number irq;
55  uint32_t initial_baud;
56} lpc32xx_hsu_context;
57
58extern const rtems_termios_device_handler lpc32xx_hsu_fns;
59
60bool lpc32xx_hsu_probe(rtems_termios_device_context *base);
61
62/** @} */
63
64#ifdef __cplusplus
65}
66#endif /* __cplusplus */
67
68#endif /* LIBBSP_ARM_LPC32XX_HSU_H */
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