154 lines
4.3 KiB
Groff
154 lines
4.3 KiB
Groff
.\"
|
|
.\" Copyright (c) 2003 Tom Rhodes
|
|
.\" 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 April 1, 2003
|
|
.Dt SMAPI 4 i386
|
|
.Os
|
|
.Sh NAME
|
|
.Nm smapi
|
|
.Nd "System Management Application Program Interface driver"
|
|
.Sh DESCRIPTION
|
|
Many
|
|
.Tn IBM Thinkpad
|
|
laptops utilize a special software interface known as
|
|
.Tn SMAPI
|
|
(System Management Application Program Interface).
|
|
This interface controls various aspects of the system including:
|
|
.Bl -bullet
|
|
.It
|
|
System Interface
|
|
(the
|
|
.Tn BIOS
|
|
can store system information such as the system identifier),
|
|
.It
|
|
System Configuration (where devices such as the display can be configured),
|
|
.It
|
|
Power Management (software can interact with the
|
|
.Tn SMAPI BIOS
|
|
for Power Management control).
|
|
.El
|
|
.Pp
|
|
Client software must locate a
|
|
.Dq "header image"
|
|
stored in the
|
|
.Li F000
|
|
segment in the
|
|
.Tn Thinkpad ROM
|
|
(read-only memory), which resides at the 16-byte boundary.
|
|
This is considered the
|
|
.Dq "Entry Point"
|
|
for the service.
|
|
.Pp
|
|
The
|
|
.Dq "header image"
|
|
stores information like:
|
|
.Bl -bullet
|
|
.It
|
|
signature,
|
|
.It
|
|
.Tn SMAPI
|
|
version (major and minor),
|
|
.It
|
|
header image length,
|
|
.It
|
|
checksum information (which verifies the image),
|
|
.It
|
|
an Information Word (used to identify the
|
|
.Tn BIOS
|
|
service level),
|
|
.It
|
|
Real Mode Entry Point (where clients using the
|
|
Real/V86 mode for the far-call value),
|
|
.It
|
|
and finally a 16-bit/32-bit Protected Mode Entry
|
|
Point: base code address which specifies the
|
|
.Tn BIOS
|
|
physical address.
|
|
The client must prepare a 64 kilobyte selector for this
|
|
.Tn BIOS ) .
|
|
.El
|
|
.Pp
|
|
To invoke the
|
|
.Tn SMAPI BIOS ,
|
|
a far-call must be used on the entry point specified in the header file.
|
|
All other information should be stored in the client data area.
|
|
The client is required to prepare both an input and output parameter in a
|
|
data area of its own.
|
|
This area can be
|
|
.Dq informed
|
|
by pushing those pointers into its stack before the far-calls.
|
|
.Pp
|
|
The
|
|
.Tn SMAPI BIOS
|
|
uses the stack and data areas with the selector during a
|
|
.Tn BIOS
|
|
invocation, thus the caller must define the same privilege area as the
|
|
.Tn BIOS .
|
|
.Pp
|
|
The parameter structure will be made up by using the input and output
|
|
fields prepared by the caller.
|
|
The input field will specify the function request to the
|
|
.Tn BIOS .
|
|
The
|
|
.Tn BIOS
|
|
will then drop a return value into the output field.
|
|
These fields are made up of three parts.
|
|
The first holds parameters, function numbers, and return codes.
|
|
The next will contain an offset in hexadecimal.
|
|
Finally a length field which is comprised of Byte, Word, or Double Word.
|
|
.Sh SEE ALSO
|
|
.Rs
|
|
.%B "IBM Thinkpad 560/560E Technical Reference"
|
|
.%O "06J0536 S76H-7587-01"
|
|
.Re
|
|
.Rs
|
|
.%B "IBM Thinkpad 560Z Technical Reference"
|
|
.%O "xxxxxxx xxxx-xxxx-xx"
|
|
.Re
|
|
.Rs
|
|
.%B "IBM Thinkpad 600 Technical Reference"
|
|
.%O "xxxxxxx xxxx-xxxx-xx"
|
|
.Re
|
|
.Rs
|
|
.%B "IBM Thinkpad 760XD/760XL/765D/765L Technical Reference"
|
|
.%O "06J0537 S30H-2433-02"
|
|
.Re
|
|
.Rs
|
|
.%B "IBM Thinkpad 770 Technical Reference"
|
|
.%O "05L1739 S05L-1739-00"
|
|
.Re
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Matthew N. Dodd Aq mdodd@FreeBSD.org .
|
|
This manual page was written by
|
|
.An Tom Rhodes Aq trhodes@FreeBSD.org
|
|
and
|
|
.An Matthew N. Dodd Aq mdodd@FreeBSD.org .
|