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98 lines
4.7 KiB
XML
98 lines
4.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright (c) 2016 OpenPOWER Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="ch_introduction">
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<title>Introduction</title>
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<para>This document specifies the application of OF to an LoPAR System,
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including requirements and practices to support unique hardware and
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firmware specific to the platform implementation. The core requirements and
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practices specified by OF must be augmented by system-specific requirements
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to form a complete specification for the firmware implementation of an
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LoPAR System. This appendix establishes such additional requirements
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pertaining to the platform and the support required by OF.</para>
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<para>This document also specifies the application of OF to a PA Processor
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(which covers all PowerPC processors and their successors), including
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requirements and practices to support unique firmware specific to a PA
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Processor. The core requirements and practices specified by OF must be
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augmented by processor-specific requirements to form a complete
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specification for the firmware implementation for a PA processor.
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<xref linkend="dbdoclet.50569374_59715" />
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establishes such additional requirements pertaining to the
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processor and the support required by OF.</para>
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<para>This document further specifies the application of
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<emphasis>IEEE Std 1275-1994 Standard for Boot (Initialization,
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Configuration) Firmware, Core Practices and Requirements</emphasis>,
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<emphasis>Core Errata, IEEE P1275.7</emphasis> and appropriate OF Standards
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for LoPAR computer systems, including practices for client program
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interface and data formats.</para>
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<section>
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<title>General Requirements</title>
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<para>An OF implementation for an LoPAR platform shall implement the
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core requirements as defined in
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<xref linkend="dbdoclet.50569387_45524" />, core errata
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<xref linkend="dbdoclet.50569387_14175" />, the PA Processor-specific
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extensions described in
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<xref linkend="dbdoclet.50569374_59715" />, other appropriate bindings
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and/or recommended practices contained in the references (see
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<xref linkend="dbdoclet.50569387_27251" />), and the LoPAR Binding
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specific extensions described in this appendix.</para>
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<para>In addition, an OF implementation for an LoPAR platform shall
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implement the
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<emphasis>Device Interface</emphasis>,
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<emphasis>Client Interface</emphasis> and
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<emphasis>User Interface</emphasis> as defined in
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<xref linkend="dbdoclet.50569387_45524" />.</para>
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<para>Some LoPAR Binding property names exceed the OF Base specification
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limit of 31 characters. LoPAR OF implementations shall support property
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names of at least 47 characters.</para>
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</section>
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<section>
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<title>Processor Architecture Requirements</title>
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<para><xref linkend="dbdoclet.50569374_59715" /> specifies the application of
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<emphasis>
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<xref linkend="dbdoclet.50569387_45524" />
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</emphasis> to computer systems that use the PA instruction set, including
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instruction-set-specific requirements and practices for debugging, client
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program interface and data formats. An implementation of OF for PA shall
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implement the core requirements as defined in
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<xref linkend="dbdoclet.50569387_45524" />and the PA-specific extensions
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described in this binding.</para>
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<para>This appendix addresses
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<xref linkend="dbdoclet.50569387_99718" />. The descriptions that follow,
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and the relevant sections describing translation features for this binding,
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assume that the system’s PA processor(s) implement the entire PA
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(that is, all books of
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<xref linkend="dbdoclet.50569387_99718" />). Some processors may implement
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different Book II-III features; such processors may need a variant of this
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binding describing the differences to the mapping functions, etc.</para>
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</section>
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</chapter>
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