67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
/* version.c */
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/*
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* Copyright (c) 1997-2010, 2012-2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* includes */
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#include <cputype.h>
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#include "version.h" /* generated by MAKE, at compile time */
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/* locals */
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static uint32_t kernel_version = KERNELVERSION;
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/*******************************************************************************
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*
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* kernel_version_get - return the kernel version of the present build
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*
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* The kernel version is a four-byte word divided into three parts.
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*
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* Part 1: The two most significant bytes are sub-divided into four nibbles,
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* representing the kernel's numeric version -- that is, w.x.y.z.
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* (Each numeric element must therefore be in the range 0 to 15, inclusive.)
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*
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* Part 2: The next most significant byte is used for a variety of flags and
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* is broken down as follows:
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* Bit 7 - Set for VSP builds; clear for SP builds
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* Bit 6 - Set for release builds; clear for debug builds
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* Bits 5..0 - Cleared as they are currently unused
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*
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* Part 3: The least significant byte is reserved for future use.
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*
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* RETURNS: kernel version
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*/
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uint32_t kernel_version_get(void)
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{
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return kernel_version;
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}
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