2006-08-01 22:19:01 +00:00
|
|
|
.\"-
|
|
|
|
|
.\" Copyright (c) 2006 Maxim Sobolev <sobomax@FreeBSD.org>
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
|
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
|
|
|
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
|
|
|
.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
|
|
|
.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
|
|
|
.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
|
|
|
.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
|
|
|
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
|
|
|
.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
|
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd August 1, 2006
|
|
|
|
|
.Dt NVRAM 8 powerpc
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm nvram
|
|
|
|
|
.Nd "display or modify contents of the EEPROM or NVRAM"
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm
|
|
|
|
|
.Fl p
|
|
|
|
|
.Nm
|
2006-09-30 19:07:03 +00:00
|
|
|
.Oo Fl d Ar name Oc Ar ...
|
|
|
|
|
.Op Ar name Ns = Ns Ar value ...
|
2006-08-01 22:19:01 +00:00
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility provides an interface for displaying and changing the system's
|
|
|
|
|
configuration variables contained in EEPROM or NVRAM.
|
|
|
|
|
In the first synopsis form, all available configuration variables and their
|
|
|
|
|
current values are printed.
|
|
|
|
|
In the second form, the variable selected by
|
|
|
|
|
.Ar name
|
|
|
|
|
is either removed or its value is changed to the
|
|
|
|
|
.Ar value
|
|
|
|
|
following by
|
|
|
|
|
.Ql =
|
|
|
|
|
sign.
|
|
|
|
|
.Pp
|
|
|
|
|
The following options are available:
|
|
|
|
|
.Bl -tag -width indent
|
|
|
|
|
.It Fl d Ar name
|
|
|
|
|
Delete the variable selected by
|
|
|
|
|
.Ar name
|
2006-09-30 19:07:03 +00:00
|
|
|
from the EEPROM or NVRAM.
|
|
|
|
|
The
|
2006-08-01 22:19:01 +00:00
|
|
|
.Fl d
|
|
|
|
|
flag can be specified multiple times, in which case multiple variables
|
|
|
|
|
will be removed.
|
|
|
|
|
.It Fl p
|
|
|
|
|
Print all available configuration variables and their current values.
|
|
|
|
|
.El
|
|
|
|
|
.Sh EXAMPLES
|
|
|
|
|
Print all available configuration variables and their current values:
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "nvram -p"
|
|
|
|
|
.Pp
|
|
|
|
|
Remove the variable named
|
|
|
|
|
.Va local-mac-address? :
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "nvram -d local-mac-address\e?"
|
|
|
|
|
.Pp
|
|
|
|
|
Set the value of the
|
|
|
|
|
.Va local-mac-address?
|
|
|
|
|
variable to
|
|
|
|
|
.Dq Li true :
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "nvram local-mac-address\e?=true"
|
|
|
|
|
.Pp
|
|
|
|
|
Note that the
|
|
|
|
|
.Ql \e
|
|
|
|
|
in the above examples is used to keep the shell from interpreting the
|
|
|
|
|
.Ql \&? .
|
|
|
|
|
.Pp
|
|
|
|
|
Remove variables named
|
|
|
|
|
.Va foo
|
|
|
|
|
and
|
|
|
|
|
.Va bar
|
|
|
|
|
and set variable named
|
|
|
|
|
.Va baz
|
|
|
|
|
to
|
|
|
|
|
.Dq Li 100 :
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "nvram -d foo -d bar baz=100"
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr powermac_nvram 4 ,
|
|
|
|
|
.Xr eeprom 8
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility first appeared in
|
|
|
|
|
.Fx 7.0 .
|
|
|
|
|
It is inspired by the
|
|
|
|
|
Darwin/Mac OS X
|
2006-09-30 19:07:03 +00:00
|
|
|
.Nm
|
2006-08-01 22:19:01 +00:00
|
|
|
utility.
|
|
|
|
|
.Sh AUTHORS
|
2014-06-20 09:57:27 +00:00
|
|
|
.An Maxim Sobolev Aq Mt sobomax@FreeBSD.org
|
2006-08-01 22:19:01 +00:00
|
|
|
.Sh BUGS
|
|
|
|
|
Currently,
|
|
|
|
|
.Nm
|
|
|
|
|
only supports systems equipped with AMD flash and is only tested on Apple
|
|
|
|
|
G4-based Mac Mini machines.
|
