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Signed-off-by:  <inaky.perez-gonzalez@intel.com>
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Inaky Perez-Gonzalez 2015-04-10 16:44:37 -07:00
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/* kernel version macros */
/*
* Copyright (c) 2015 Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _kernel_version__h_
#define _kernel_version__h_
/*
* The kernel version has been converted from a string to a four-byte
* quantity that is divided into three parts.
*
* Part 1: The two most significant bytes are sub-divided into four nibbles,
* representing the kernel's numeric version, w.x.y.z. These fields denote:
* w -- generation release number
* x -- major release
* y -- minor release
* z -- servicepack release
* Each of these elements must therefore be in the range 0 to 15, inclusive.
*
* Part 2: The next most significant byte is used for a variety of flags and is
* broken down as follows:
* Bits 7..0 - Cleared as the are currently unused.
*
* Part 3: The least significant byte is reserved for future use.
*/
#define KERNEL_VER_GENERATION(ver) ((ver >> 28) & 0x0F)
#define KERNEL_VER_MAJOR(ver) ((ver >> 24) & 0x0F)
#define KERNEL_VER_MINOR(ver) ((ver >> 20) & 0x0F)
#define KERNEL_VER_SERVICEPACK(ver) ((ver >> 16) & 0x0F)
/* return 8-bit flags */
#define KERNEL_VER_FLAGS(ver) ((ver >> 8) & 0xFF)
#endif /* _kernel_version__h_ */