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Code Issues Releases Activity

Update cpucontrol(8).

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Mention new -n flag.
Remove optional -h from the operation list lines, -h would cause the
utility to exit without performing the action.
Explain the default path behavior, list default path.
Correct example of update performed from the non-default path,
it needs -n and the trailing slash is redundand.
Remove useless BUGS section.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2017-09-30 10:03:42 +00:00
parent 0539c17353
commit 4b06638f20
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=324114
1 changed files with 17 additions and 13 deletions
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30
usr.sbin/cpucontrol/cpucontrol.8
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd June 30, 2009
.Dd September 30, 2017
.Dt CPUCONTROL 8
.Os
.Sh NAME
@ -34,43 +34,43 @@
device
.Sh SYNOPSIS
.Nm
.Op Fl vh
.Op Fl v
.Fl m Ar msr
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl v
.Fl m Ar msr Ns = Ns Ar value
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl v
.Fl m Ar msr Ns &= Ns Ar mask
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl v
.Fl m Ar msr Ns |= Ns Ar mask
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl v
.Fl i Ar level
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl v
.Fl i Ar level,level_type
.Bk
.Ar device
.Ek
.Nm
.Op Fl vh
.Op Fl vn
.Op Fl d Ar datadir
.Fl u
.Bk
@ -88,8 +88,14 @@ It can also be used to apply CPU firmware updates.
The following options are available:
.Bl -tag -width indent
.It Fl d Ar datadir
Where to look for microcode images.
Directory paths where to look for microcode images.
The option can be specified multiple times.
The paths are added in order of the options appearance on the command
line, default directories are appended after the user-supplied paths.
.It Fl n
Do not look for the microcode images in the standard directories.
Currently standard directory to look for the microcode update files is
.Pa /usr/local/share/cpucontrol .
.It Fl m Ar msr
Show value of the specified MSR.
MSR register number should be given as a hexadecimal number.
@ -163,10 +169,10 @@ The command
will retrieve the CPUID level 0x1 from CPU 1.
.Pp
To perform firmware updates on CPU 0 from images located at
.Pa /usr/local/share/cpuctl/
.Pa /usr/local/share/cpuctl
use the following command:
.Pp
.Dq Li "cpucontrol -d /usr/local/share/cpuctl/ -u /dev/cpuctl0"
.Dq Li "cpucontrol -nd /usr/local/share/cpuctl -u /dev/cpuctl0"
.Sh SEE ALSO
.Xr cpuctl 4
.Sh HISTORY
@ -179,5 +185,3 @@ The
.Nm
utility and this manual page was written by
.An Stanislav Sedov Aq Mt stas@FreeBSD.org .
.Sh BUGS
Yes, probably, report if any.