author | Graeme Price <GRAEME.PRICE@NOKIA.COM> |
Fri, 15 Oct 2010 14:32:18 +0100 | |
changeset 15 | 307f4279f433 |
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307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<?xml version="1.0" encoding="utf-8"?> |
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<!-- This component and the accompanying materials are made available under the terms of the License |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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"Eclipse Public License v1.0" which accompanies this distribution, |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<!-- Initial Contributors: |
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Initial contribution of the Adaptation Documentation.
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parents:
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Nokia Corporation - initial contribution. |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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Contributors: |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
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--> |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<!DOCTYPE concept |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
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<concept id="GUID-D5EE0A17-2246-4CB3-9CE5-538F1E01F8D4" xml:lang="en"><title>What is Adaptation?</title><shortdesc>Provides a brief overview of hardware adaptation .</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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<section id="GUID-66019FCA-913D-4BC1-B823-038A3CCB8602"><title>Adaptation</title><p>Adaptation is the process of adding a hardware or a platform service |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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to the device, it includes:</p><ul> |
307f4279f433
Initial contribution of the Adaptation Documentation.
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<li><p>the required hardware</p></li> |
307f4279f433
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<li><p>a list of device drivers to be written</p></li> |
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<li><p>the list of required Platform services</p></li> |
307f4279f433
Initial contribution of the Adaptation Documentation.
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<li><p>the process of porting the operating system to the hardware</p></li> |
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<li><p>integration of peripherals possibly created by third parties</p></li> |
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</ul><p>Base porting and device drivers involve platform specific |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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implementation on hardware.</p></section> |
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<section id="GUID-F6B4ED47-12F9-450D-AE96-930939382C7A"><title>The |
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Initial contribution of the Adaptation Documentation.
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Adaptation Layer and Platform services</title><p>The adaptation layer |
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interfaces between the operating system and hardware: it is a hardware |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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abstraction layer extended with modular functionality. It is partitioned |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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into platform services and client interfaces. The hardware manufacturers |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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implement the platform services in platform-specific instructions. |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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The device driver writers use the client interface in their code to |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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control various hardware. </p><fig id="GUID-3C3C24BE-B6B9-4738-83A4-DF05C3CDC19C"> |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<title>Adaptation Layer, Platform services and hardware</title> |
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<image href="GUID-2C312536-2410-42D7-B976-F7CF99492DEA_d0e344_href.png" placement="inline"/> |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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</fig><p>The purpose of Platform services:</p><ul> |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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<li><p> to make porting easier,</p></li> |
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Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
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<li><p> to enable hardware vendors to supply standard solutions, |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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and</p></li> |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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<li><p> to create a common interface for use by chipset vendors, phone |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
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vendors and peripheral vendors.</p></li> |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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</ul><p>The simplest Platform services are sets of APIs running in |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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kernel space and corresponding to discrete items of hardware. Other |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
diff
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Platform services form part of frameworks which may extend into user |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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space and higher levels of the operating system. Some Platform services |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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interact with other Platform services within the adaptation layer, |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
diff
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forming a logical stack which may cross the boundary between adaptation |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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layer and operating system at several points. A Platform service is |
307f4279f433
Initial contribution of the Adaptation Documentation.
Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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not necessarily implemented on hardware: some are implemented wholly |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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or partly as device specific software.</p><p>Implementers are provided |
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
parents:
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with:</p><ul> |
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<li><p>the APIs to be implemented, with an explanation of the intended |
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functionality</p></li> |
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<li><p>information about the associated framework and stack if appropriate</p></li> |
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<li><p>a statement of any associated standards and protocols</p></li> |
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<li><p>information about the tools required</p></li> |
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<li><p> tests to prove the implementation once it has been written</p></li> |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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</ul>They are sometimes also given a reference implementation.</section> |
307f4279f433
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Graeme Price <GRAEME.PRICE@NOKIA.COM>
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</conbody></concept> |