+++ /dev/null
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-TITLE="HAL Structure"
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-NAME="HAL-PORTING-GUIDE">Chapter 11. Porting Guide</H1
-><DIV
-CLASS="TOC"
-><DL
-><DT
-><B
->Table of Contents</B
-></DT
-><DT
-><A
-HREF="hal-porting-guide.html#HAL-PORTING-INTRO"
->Introduction</A
-></DT
-><DT
-><A
-HREF="hal-porting-structure.html"
->HAL Structure</A
-></DT
-><DT
-><A
-HREF="hal-calling-if.html"
->Virtual Vectors (eCos/ROM Monitor Calling Interface)</A
-></DT
-><DT
-><A
-HREF="hal-porting-coding-conventions.html"
->HAL Coding Conventions</A
-></DT
-><DT
-><A
-HREF="hal-porting-platform.html"
->Platform HAL Porting</A
-></DT
-><DT
-><A
-HREF="hal-porting-variant.html"
->Variant HAL Porting</A
-></DT
-><DT
-><A
-HREF="hal-porting-architecture.html"
->Architecture HAL Porting</A
-></DT
-></DL
-></DIV
-><DIV
-CLASS="SECTION"
-><H1
-CLASS="SECTION"
-><A
-NAME="HAL-PORTING-INTRO">Introduction</H1
-><P
->eCos has been designed to be fairly easy to port to new targets. A
-target is a specific platform (board) using a given architecture (CPU
-type). The porting is facilitated by the hierarchical layering of the
-eCos sources - all architecture and platform specific code is
-implemented in a HAL (hardware abstraction layer).</P
-><P
->By porting the eCos HAL to a new target the core functionality of eCos
-(infra, kernel, uITRON, etc) will be able to run on the target. It may
-be necessary to add further platform specific code such as serial
-drivers, display drivers, ethernet drivers, etc. to get a fully
-capable system.</P
-><P
->This document is intended as a help to the HAL porting process. Due to
-the nature of a porting job, it is impossible to give a complete
-description of what has to be done for each and every potential
-target. This should not be considered a clear-cut recipe - you will
-probably need to make some implementation decisions, tweak a few
-things, and just plain have to rely on common sense.</P
-><P
->However, what is covered here should be a large part of the
-process. If you get stuck, you are advised to read the
-<A
-HREF="http://sourceware.cygnus.com/ml/ecos-discuss/"
-TARGET="_top"
->ecos-discuss archive</A
->
-where you may find discussions which apply to the problem at
-hand. You are also invited to ask questions on the
-<A
-HREF="http://sourceware.cygnus.com/ecos/intouch.html"
-TARGET="_top"
->ecos-discuss mailing list</A
->
-to help you resolve problems - but as is always the case
-with community lists, do not consider it an oracle for any and all
-questions. Use common sense - if you ask too many questions which
-could have been answered by reading the
-<A
-HREF="http://sourceware.cygnus.com/ecos/docs-latest/"
-TARGET="_top"
->documentation</A
->,
-<A
-HREF="http://sourceware.cygnus.com/fom/ecos"
-TARGET="_top"
->FAQ</A
-> or
-<A
-HREF="http://sourceware.cygnus.com/cgi-bin/cvsweb.cgi/ecos/packages/?cvsroot=ecos"
-TARGET="_top"
->source code</A
->, you are likely to be ignored.</P
-><P
->This document will be continually improved by Red Hat engineers as
-time allows. Feedback and help with improving the document is sought,
-so if you have any comments at all, please do not hesitate to post
-them on
-<A
-HREF="mailto:ecos-discuss@sourceware.cygnus.com?subject=[porting]<subject>"
-TARGET="_top"
->ecos-discuss</A
->
-(please prefix the subject with [porting]).</P
-><P
->At the moment this document is mostly an outline. There are many
-details to fill in before it becomes complete. Many places you'll just
-find a list of keywords / concepts that should be described (please
-post on ecos-discuss if there are areas you think are not covered).</P
-><P
->All pages or sections where the caption ends in [TBD] contain little
-more than key words and/or random thoughts - there has been no work
-done as such on the content. The word FIXME may appear in the text to
-highlight places where information is missing.</P
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