source: rtems/bsps/or1k/include/bsp/cache_.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: 1007 bytes
Line 
1/*
2 * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com>
3 *
4 * The license and distribution terms for this file may be
5 * found in the file LICENSE in this distribution or at
6 * http://www.rtems.org/license/LICENSE.
7 */
8
9#ifndef LIBBSP_OR1K_SHARED_CACHE_H
10#define LIBBSP_OR1K_SHARED_CACHE_H
11
12#include <assert.h>
13#include <bsp.h>
14#include <rtems/rtems/intr.h>
15
16
17#ifdef __cplusplus
18extern "C" {
19#endif /* __cplusplus */
20
21/* These two defines also ensure that the rtems_cache_* functions have bodies */
22#define CPU_DATA_CACHE_ALIGNMENT        32
23#define CPU_INSTRUCTION_CACHE_ALIGNMENT 32
24
25#define CPU_CACHE_SUPPORT_PROVIDES_CACHE_SIZE_FUNCTIONS 1
26
27static inline size_t
28_CPU_cache_get_data_cache_size( const uint32_t level )
29{
30  return (level == 0 || level == 1)? 8192 : 0;
31}
32
33static inline size_t
34_CPU_cache_get_instruction_cache_size( const uint32_t level )
35{
36  return (level == 0 || level == 1)? 8192 : 0;
37}
38
39#ifdef __cplusplus
40}
41#endif /* __cplusplus */
42
43#endif /* LIBBSP_OR1K_SHARED_CACHE_H */
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