source: rtems/bsps/mips/include/libcpu/tx3904.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: 1.1 KB
Line 
1/**
2 *  @file
3 * 
4 *  MIPS Tx3904 specific information
5 *
6 *  NOTE: This is far from complete.  --joel (13 Dec 2000)
7 */
8
9/*
10 *  COPYRIGHT (c) 1989-2012.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#ifndef __TX3904_h
19#define __TX3904_h
20
21/*
22 *  Timer Base Addresses and Offsets
23 */
24
25#define TX3904_TIMER0_BASE 0xFFFFF000
26#define TX3904_TIMER1_BASE 0xFFFFF100
27#define TX3904_TIMER2_BASE 0xFFFFF200
28
29#define TX3904_TIMER_TCR  0x00
30#define TX3904_TIMER_TISR 0x04
31#define TX3904_TIMER_CPRA 0x08
32#define TX3904_TIMER_CPRB 0x0C
33#define TX3904_TIMER_ITMR 0x10
34#define TX3904_TIMER_CCDR 0x20
35#define TX3904_TIMER_PGMR 0x30
36#define TX3904_TIMER_WTMR 0x40
37#define TX3904_TIMER_TRR  0xF0
38
39#define TX3904_TIMER_READ( _base, _register ) \
40  *((volatile uint32_t*)((_base) + (_register)))
41
42#define TX3904_TIMER_WRITE( _base, _register, _value ) \
43  *((volatile uint32_t*)((_base) + (_register))) = (_value)
44
45#endif
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