d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Mdoc and wording improvements.

Browse Source
This commit is contained in:
Christian Brueffer 2008-12-30 20:16:33 +00:00
parent e287cc5d31
commit 6d85087649
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=186611
1 changed files with 13 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
usr.sbin/cpucontrol/cpucontrol.8
View File

@ -55,21 +55,26 @@ device.
.Sh DESCRIPTION
The
.Nm
utility can be used to read and write an arbitrary machine-specific
CPU registers via
utility can be used to read and write arbitrary machine-specific
CPU registers via the
.Xr cpuctl 4
controlled special device and apply the CPU firmware updates.
special device.
It can also be used to apply CPU firmware updates.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl d Ar datadir
Where to look for microcode images. The option can be specified multiple times.
Where to look for microcode images.
The option can be specified multiple times.
.It Fl m Ar msr Ns Op = Ns Ar value
Read/write the specified MSR. Both the MSR and the value should be given as a hex number.
Read/write the specified MSR.
Both the MSR and the value should be given as a hex number.
.It Fl i Ar level
Retrieve CPUID info. Level should be given as a hex number.
Retrieve CPUID info.
Level should be given as a hex number.
.It Fl u
Apply CPU firmware updates. The
Apply CPU firmware updates.
The
.Nm
utility will walk through the configured data directories
and will apply all firmware patches available for this CPU.
@ -93,14 +98,13 @@ To set the CPU 0 TSC MSR register value to 0x1 issue
.Pp
.Dq Li "cpucontrol -m 0x10=0x1 /dev/cpuctl0"
.Pp
.Pp
The command
.Pp
.Dq Li "cpucontrol -i 0x1 /dev/cpuctl1"
.Pp
will retrieve the CPUID level 0x1 from CPU 1.
.Pp
To perform firmware updated on CPU 0 from images located at
To perform firmware updates on CPU 0 from images located at
.Pa /usr/local/share/cpuctl/
use the following command:
.Pp