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microcode_ctl (8)
  • >> microcode_ctl (8) ( Linux man: Команды системного администрирования )
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    NAME

    microcode_ctl - microcode utility for Intel IA32 processors
     
    

    SYNOPSIS

    microcode_ctl [-h] [-u [-q]] [-Q] [-f microcode]
     

    DESCRIPTION

    The microcode_ctl utility is a companion to the IA32 microcode driver written by Tigran Aivazian <[email protected]>. The uaility has two uses:

    a) it decodes and sends new microcode to the kernel driver to be uploaded to Intel IA32 processors. (Pentium Pro, PII, Celeron, PIII, Xeon, Pentium 4 etc)

    b) it signals the kernel driver to release the buffers containing the copy of microcode data actually applied to given CPU, linear array of 2048 bytes per CPU, see struct microcode in include/asm/processor.h for information on the layout of chunks buffers may hold

    The microcode update is volatile and needs to be uploaded on each system boot i.e. it doesn't reflash your cpu permanently, reboot and it reverts back to the old microcode.

    -h
    display usage and exit
    -u
    upload microcode (from default filename)
    -f
    upload microcode from named Intel formatted file
    -q
    run silently when successful
    -Q
    run silently even on failure
     

    EXAMPLE

    microcode_ctl -u
    Upload microcode using defaults
     

    FILES

    /etc/microcode.dat
    The default microcode location
     

    AUTHOR

    Microcode utility written by Simon Trimmer
    Linux Kernel driver written by Tigran Aivazian.  

    REPORTING BUGS

    Report bugs to either Simon Trimmer <[email protected]> or Tigran Aivazian <[email protected]>  

    COPYRIGHT

    Copyright © 2000 VERITAS Software
    This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

    SPECIAL THANKS

    Thanks to the Intel Corporation, for supplying microcode update data and publishing the specifications that enabled us to write microcode driver for Linux.
     

    SEE ALSO

    The brave are recommended to view the driver source code located in the Linux Kernel source tree in arch/i386/kernel/microcode.c

    Visit http://www.urbanmyth.org/microcode/ for more information and microcode updates.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXAMPLE
    FILES
    AUTHOR
    REPORTING BUGS
    COPYRIGHT
    SPECIAL THANKS
    SEE ALSO


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