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.

1 files changed, 275 insertions, 0 deletions

diff --git a/cpukit/include/linux/i2c.h b/cpukit/include/linux/i2c.h
new file mode 100644
index 0000000000..b113545cce
--- /dev/null
+++ b/cpukit/include/linux/i2c.h
@@ -0,0 +1,275 @@
+/**
+ * @file
+ *
+ * @brief RTEMS Port of Linux I2C API
+ *
+ * @ingroup I2CLinux
+ */
+
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _UAPI_LINUX_I2C_H
+#define _UAPI_LINUX_I2C_H
+
+#include <stdint.h>
+
+/**
+ * @defgroup I2CLinux Linux I2C User-Space API
+ *
+ * @ingroup I2C
+ *
+ * @brief RTEMS port of Linux I2C user-space API.
+ *
+ * Additional documentation is available through the Linux sources, see:
+ *
+ * - /usr/src/linux/include/uapi/linux/i2c.h,
+ * - /usr/src/linux/include/uapi/linux/i2c-dev.h
+ * - https://www.kernel.org/doc/Documentation/i2c/i2c-protocol
+ * - https://www.kernel.org/doc/Documentation/i2c/dev-interface
+ *
+ * @{
+ */
+
+/**
+ * @name I2C Message Flags
+ *
+ * @{
+ */
+
+/**
+ * @brief I2C message flag to indicate a 10-bit address.
+ *
+ * The controller must support this as indicated by the I2C_FUNC_10BIT_ADDR
+ * functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_TEN 0x0010
+
+/**
+ * @brief I2C message flag to indicate a read transfer (from slave to master).
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_RD 0x0001
+
+/**
+ * @brief I2C message flag to signal a stop condition even if this is not the
+ * last message.
+ *
+ * The controller must support this as indicated by the
+ * @ref I2C_FUNC_PROTOCOL_MANGLING functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_STOP 0x8000
+
+/**
+ * @brief I2C message flag to omit start condition and slave address.
+ *
+ * The controller must support this as indicated by the
+ * @ref I2C_FUNC_NOSTART functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_NOSTART 0x4000
+
+/**
+ * @brief I2C message flag to reverse the direction flag.
+ *
+ * The controller must support this as indicated by the
+ * @ref I2C_FUNC_PROTOCOL_MANGLING functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_REV_DIR_ADDR 0x2000
+
+/**
+ * @brief I2C message flag to ignore a non-acknowledge.
+ *
+ * The controller must support this as indicated by the
+ * @ref I2C_FUNC_PROTOCOL_MANGLING functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_IGNORE_NAK 0x1000
+
+/**
+ * @brief I2C message flag to omit a master acknowledge/non-acknowledge in a
+ * read transfer.
+ *
+ * The controller must support this as indicated by the
+ * @ref I2C_FUNC_PROTOCOL_MANGLING functionality.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_NO_RD_ACK 0x0800
+
+/**
+ * @brief I2C message flag to indicate that the message data length is the
+ * first received byte.
+ *
+ * The message data buffer must be large enough to store up to 32 bytes, the
+ * initial length byte and the SMBus PEC (if used).  Initialize the message
+ * length to one.  The message length is incremented by the count of received
+ * data bytes.
+ *
+ * @see i2c_msg.
+ */
+#define I2C_M_RECV_LEN 0x0400
+
+/** @} */
+
+/**
+ * @brief I2C transfer message.
+ */
+struct i2c_msg {
+  /**
+   * @brief The slave address.
+   *
+   * In case the @ref I2C_M_TEN flag is set, then this is a 10-bit address,
+   * otherwise it is a 7-bit address.
+   */
+  uint16_t addr;
+
+  /**
+   * @brief The message flags.
+   *
+   * Valid flags are
+   * - @ref I2C_M_TEN,
+   * - @ref I2C_M_RD,
+   * - @ref I2C_M_STOP,
+   * - @ref I2C_M_NOSTART,
+   * - @ref I2C_M_REV_DIR_ADDR,
+   * - @ref I2C_M_IGNORE_NAK,
+   * - @ref I2C_M_NO_RD_ACK, and
+   * - @ref I2C_M_RECV_LEN.
+   */
+  uint16_t flags;
+
+  /**
+   * @brief The message data length in bytes.
+   */
+  uint16_t len;
+
+  /**
+   * @brief Pointer to the message data.
+   */
+  uint8_t *buf;
+};
+
+/**
+ * @name I2C Controller Functionality
+ *
+ * @{
+ */
+
+#define I2C_FUNC_I2C 0x00000001
+#define I2C_FUNC_10BIT_ADDR 0x00000002
+#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004
+#define I2C_FUNC_SMBUS_PEC 0x00000008
+#define I2C_FUNC_NOSTART 0x00000010
+#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000
+#define I2C_FUNC_SMBUS_QUICK 0x00010000
+#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
+#define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000
+#define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000
+#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000
+#define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000
+#define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000
+#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
+#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
+#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000
+#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000
+
+#define I2C_FUNC_SMBUS_BYTE \
+  (I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE)
+
+#define I2C_FUNC_SMBUS_BYTE_DATA \
+  (I2C_FUNC_SMBUS_READ_BYTE_DATA | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
+
+#define I2C_FUNC_SMBUS_WORD_DATA \
+  (I2C_FUNC_SMBUS_READ_WORD_DATA | I2C_FUNC_SMBUS_WRITE_WORD_DATA)
+
+#define I2C_FUNC_SMBUS_BLOCK_DATA \
+  (I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
+
+#define I2C_FUNC_SMBUS_I2C_BLOCK \
+  (I2C_FUNC_SMBUS_READ_I2C_BLOCK | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
+
+#define I2C_FUNC_SMBUS_EMUL \
+  (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA \
+    | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_PROC_CALL \
+    | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | I2C_FUNC_SMBUS_I2C_BLOCK \
+    | I2C_FUNC_SMBUS_PEC)
+
+/** @} */
+
+/**
+ * @brief Maximum SMBus data block count.
+ */
+#define I2C_SMBUS_BLOCK_MAX 32
+
+/**
+ * @brief SMBus data.
+ */
+union i2c_smbus_data {
+  uint8_t byte;
+  uint16_t word;
+  uint8_t block[I2C_SMBUS_BLOCK_MAX + 2];
+};
+
+/**
+ * @name SMBus Transfer Read and Write Markers
+ *
+ * @{
+ */
+
+#define I2C_SMBUS_READ 1
+
+#define I2C_SMBUS_WRITE 0
+
+/** @} */
+
+/**
+ * @name SMBus Transaction Types
+ *
+ * @{
+ */
+
+#define I2C_SMBUS_QUICK 0
+
+#define I2C_SMBUS_BYTE 1
+
+#define I2C_SMBUS_BYTE_DATA 2
+
+#define I2C_SMBUS_WORD_DATA 3
+
+#define I2C_SMBUS_PROC_CALL 4
+
+#define I2C_SMBUS_BLOCK_DATA 5
+
+#define I2C_SMBUS_I2C_BLOCK_BROKEN 6
+
+#define I2C_SMBUS_BLOCK_PROC_CALL 7
+
+#define I2C_SMBUS_I2C_BLOCK_DATA 8
+
+/** @} */
+
+/** @} */
+
+#endif /* _UAPI_LINUX_I2C_H */