Интерактивная система просмотра системных руководств (man-ов)
microcode_ctl (8)
>> microcode_ctl (8) ( Linux man: Команды системного администрирования )
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.
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
