source: rtems/bsps/arm/lpc176x/include/bsp.h @ 2afb22b

Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

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 * @file
3 *
4 * @ingroup lpc176x
5 *
6 * @brief Global BSP definitions.
7 */
8
9/*
10 * Copyright (c) 2008-2013 embedded brains GmbH.  All rights reserved.
11 *
12 *  embedded brains GmbH
13 *  Obere Lagerstr. 30
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_LPC176X_BSP_H
24#define LIBBSP_ARM_LPC176X_BSP_H
25
26#include <bspopts.h>
27
28#define LPC176X_PCLK ( LPC176X_CCLK / LPC176X_PCLKDIV )
29#define LPC176X_MPU_REGION_COUNT 8u
30
31#define BSP_FEATURE_IRQ_EXTENSION
32#define BSP_ARMV7M_IRQ_PRIORITY_DEFAULT ( 29u << 3u )
33#define BSP_ARMV7M_SYSTICK_PRIORITY ( 30u << 3u )
34#define BSP_ARMV7M_SYSTICK_FREQUENCY LPC176X_CCLK
35
36#ifndef ASM
37
38#include <rtems.h>
39#include <bsp/default-initial-extension.h>
40
41/** Define operation count for Tests */
42#define OPERATION_COUNT 4
43
44#ifdef __cplusplus
45extern "C" {
46#endif /* __cplusplus */
47
48struct rtems_bsdnet_ifconfig;
49
50/**
51 * @defgroup lpc176x LPC176X Support
52 *
53 * @ingroup bsp_arm
54 *
55 * @brief LPC176X support package.
56 *
57 * @{
58 */
59
60/**
61 * @brief Optimized idle task.
62 *
63 * This idle task sets the power mode to idle.  This causes the processor
64 * clock to be stopped, while on-chip peripherals remain active.
65 * Any enabled interrupt from a peripheral or an external interrupt source
66 *  will cause the processor to resume execution.
67 *
68 * To enable the idle task use the following in the system configuration:
69 *
70 * @code
71 * #include <bsp.h>
72 *
73 * #define CONFIGURE_INIT
74 *
75 * #define CONFIGURE_IDLE_TASK_BODY bsp_idle_thread
76 *
77 * #include <confdefs.h>
78 * @endcode
79 */
80void*bsp_idle_thread( uintptr_t ignored );
81
82#define BSP_CONSOLE_UART_BASE 0x4000C000U
83
84/**
85 * @brief Restarts the bsp with "addr" address
86 * @param addr Address used to restart the bsp
87 */
88void bsp_restart( const void *addr );
89
90/** @} */
91
92#ifdef __cplusplus
93}
94#endif /* __cplusplus */
95
96#endif /* ASM */
97
98#endif /* LIBBSP_ARM_LPC176X_BSP_H */
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