source: rtems/bsps/arm/imx/include/arm/freescale/imx/imx_i2creg.h @ d7d66d7

5
Last change on this file since d7d66d7 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: 1.6 KB
Line 
1/*
2 * Copyright (c) 2017 embedded brains GmbH.  All rights reserved.
3 *
4 *  embedded brains GmbH
5 *  Dornierstr. 4
6 *  82178 Puchheim
7 *  Germany
8 *  <info@embedded-brains.de>
9 *
10 * The license and distribution terms for this file may be
11 * found in the file LICENSE in this distribution or at
12 * http://www.rtems.org/license/LICENSE.
13 */
14
15#ifndef IMX_I2CREG_H
16#define IMX_I2CREG_H
17
18#include <bsp/utility.h>
19
20typedef struct {
21        uint16_t iadr;
22#define IMX_I2C_IADR_ADR(val) BSP_FLD16(val, 1, 7)
23#define IMX_I2C_IADR_ADR_GET(reg) BSP_FLD16GET(reg, 1, 7)
24#define IMX_I2C_IADR_ADR_SET(reg, val) BSP_FLD16SET(reg, val, 1, 7)
25        uint16_t reserved_02;
26        uint16_t ifdr;
27#define IMX_I2C_IFDR_IC(val) BSP_FLD16(val, 0, 5)
28#define IMX_I2C_IFDR_IC_GET(reg) BSP_FLD16GET(reg, 0, 5)
29#define IMX_I2C_IFDR_IC_SET(reg, val) BSP_FLD16SET(reg, val, 0, 5)
30        uint16_t reserved_06;
31        uint16_t i2cr;
32#define IMX_I2C_I2CR_IEN BSP_BIT16(7)
33#define IMX_I2C_I2CR_IIEN BSP_BIT16(6)
34#define IMX_I2C_I2CR_MSTA BSP_BIT16(5)
35#define IMX_I2C_I2CR_MTX BSP_BIT16(4)
36#define IMX_I2C_I2CR_TXAK BSP_BIT16(3)
37#define IMX_I2C_I2CR_RSTA BSP_BIT16(2)
38        uint16_t reserved_0a;
39        uint16_t i2sr;
40#define IMX_I2C_I2SR_ICF BSP_BIT16(7)
41#define IMX_I2C_I2SR_IAAS BSP_BIT16(6)
42#define IMX_I2C_I2SR_IBB BSP_BIT16(5)
43#define IMX_I2C_I2SR_IAL BSP_BIT16(4)
44#define IMX_I2C_I2SR_SRW BSP_BIT16(2)
45#define IMX_I2C_I2SR_IIF BSP_BIT16(1)
46#define IMX_I2C_I2SR_RXAK BSP_BIT16(0)
47        uint16_t reserved_0e;
48        uint16_t i2dr;
49#define IMX_I2C_I2DR_DATA(val) BSP_FLD16(val, 0, 7)
50#define IMX_I2C_I2DR_DATA_GET(reg) BSP_FLD16GET(reg, 0, 7)
51#define IMX_I2C_I2DR_DATA_SET(reg, val) BSP_FLD16SET(reg, val, 0, 7)
52} imx_i2c;
53
54#endif /* IMX_I2CREG_H */
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