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version: Update version handling and code

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The kernel version has been converted from a string to a four-byte
quantity that is divided into two parts.
Part 1: The three most significant bytes represent the kernel's
numeric version, x.y.z. These fields denote:
      x -- major release
      y -- minor release
      z -- patchlevel release
Each of these elements must therefore be in the range 0 to 256, inclusive.

Part 2: The least significant byte is reserved for future use.

EXTRAVERSION is used for intermediate releases and customised
builds on top of an existing/released version.

Change-Id: Ibb7dd5654c36daeaa3a53499857d254aaef25bdf
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2015-06-23 18:52:06 -04:00
commit c61820bdf8
2 changed files with 16 additions and 29 deletions
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25
include/kernel_version.h
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@ -35,29 +35,20 @@
/*
* The kernel version has been converted from a string to a four-byte
* quantity that is divided into three parts.
* quantity that is divided into two 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
* Part 1: The three most significant bytes represent the kernel's
* numeric version, x.y.z. These fields denote:
* x -- major release
* y -- minor release
* z -- servicepack release
* Each of these elements must therefore be in the range 0 to 15, inclusive.
* z -- patchlevel release
* Each of these elements must therefore be in the range 0 to 256, 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.
* Part 2: The least significant byte is reserved for future use.
*/
#define SYS_KERNEL_VER_GENERATION(ver) ((ver >> 28) & 0x0F)
#define SYS_KERNEL_VER_MAJOR(ver) ((ver >> 24) & 0x0F)
#define SYS_KERNEL_VER_MINOR(ver) ((ver >> 20) & 0x0F)
#define SYS_KERNEL_VER_SERVICEPACK(ver) ((ver >> 16) & 0x0F)
/* return 8-bit flags */
#define SYS_KERNEL_VER_FLAGS(ver) ((ver >> 8) & 0xFF)
#define SYS_KERNEL_VER_MINOR(ver) ((ver >> 16) & 0x0F)
#define SYS_KERNEL_VER_PATCHLEVEL(ver) ((ver >> 8) & 0x0F)
/* kernel version routines */