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diff --git a/documentation/kernel-dev/kernel-dev-intro.xml b/documentation/kernel-dev/kernel-dev-intro.xml index c1cc22b..68fac80 100644 --- a/documentation/kernel-dev/kernel-dev-intro.xml +++ b/documentation/kernel-dev/kernel-dev-intro.xml @@ -2,76 +2,79 @@ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > -<chapter id='kernel-doc-intro'> +<chapter id='kernel-dev-intro'> -<title>Yocto Project Kernel Architecture and Use Manual</title> +<title>Yocto Project Kernel Development Manual</title> -<section id='kernel-intro-section'> +<section id='kernel-dev-introduction'> <title>Introduction</title> + <para> - The Yocto Project presents kernels as a fully patched, history-clean Git - repositories. - Each repository represents selected features, board support, - and configurations extensively tested by the Yocto Project. - Yocto Project kernels allow the end user to leverage community - best practices to seamlessly manage the development, build and debug cycles. + Regardless of how you intend to make use of the Yocto Project, chances are you +are going to need to work with the Linux kernel. The Yocto Project provides a +powerful set of tools for managing Linux kernel sources and configuration data. +If you want to make a single configuration change, apply a couple of patches, or +work with your own sources, the Yocto Project has tooling in place to help you +do it. </para> + <para> - This manual describes Yocto Project kernels by providing information - on history, organization, benefits, and use. - The manual consists of two sections: - <itemizedlist> - <listitem><para><emphasis>Concepts:</emphasis> Describes concepts behind a kernel. - You will understand how a kernel is organized and why it is organized in - the way it is. You will understand the benefits of a kernel's organization - and the mechanisms used to work with the kernel and how to apply it in your - design process.</para></listitem> - <listitem><para><emphasis>Using a Kernel:</emphasis> Describes best practices - and "how-to" information - that lets you put a kernel to practical use. - Some examples are how to examine changes in a branch and how to - save kernel modifications.</para></listitem> - </itemizedlist> + Each Yocto Project release introduces a new set of linux-yocto kernel recipes, +tracking the latest upstream developments and introducing newly supported +platforms. In addition to the new kernel recipes, the previous recipes are +refreshed and supported for at least one additional release. As they align, +these previous releases are updated to include the latest from the LTSI project. +Besides these recipes, a linux-yocto-dev recipe is available for working with +the very latest in upstream Linux kernel development as well as meta-data +development. </para> <para> - For more information on the Linux kernel, see the following links: - <itemizedlist> - <listitem><para>The Linux Foundation's guide for kernel development - process - <ulink url='http://www.linuxfoundation.org/content/1-guide-kernel-development-process'></ulink></para></listitem> - <listitem><para>A fairly encompassing guide on Linux kernel development - - <ulink url='http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=Documentation/HOWTO;hb=HEAD'></ulink></para></listitem> - </itemizedlist> + If you do not maintain your own kernel sources and need to make only minimal +changes to the sources, these recipes provide a vetted base upon which to layer +your changes. Doing so allows you to benefit from the continual kernel +integration and testing performed during development of the Yocto Project. </para> <para> - For more discussion on the Yocto Project kernel, you can see these sections - in the Yocto Project Development Manual: + If, instead, you have a very specific Linux kernel source tree and are unable to +align with one of the many official linux-yocto releases, an alternative +exists by which you can use the Yocto Project Linux kernel tools with your own +sources. + </para> + + <para> + The sections that follow provide instructions for completing specific Linux +kernel development tasks. They assume familiarity with working with bitbake +recipes and basic open-source development tools. Understanding these concepts +will facilitate the process of working with the kernel recipes. If you find you +need some additional background, please be sure to review and understand the +following documentation: <itemizedlist> - <listitem><para> - "<ulink url='&YOCTO_DOCS_DEV_URL;#kernel-overview'>Kernel Overview</ulink>"</para></listitem> - <listitem><para> - "<ulink url='&YOCTO_DOCS_DEV_URL;#kernel-modification-workflow'>Kernel Modification Workflow</ulink>" + <listitem><para><emphasis>Yocto Project Quick Start</emphasis> </para></listitem> - <listitem><para> - "<ulink url='&YOCTO_DOCS_DEV_URL;#patching-the-kernel'>Patching the Kernel</ulink>"</para></listitem> - <listitem><para> - "<ulink url='&YOCTO_DOCS_DEV_URL;#configuring-the-kernel'>Configuring the Kernel</ulink>"</para></listitem> + <listitem><para><emphasis>Yocto Project Development Manual</emphasis> + <itemizedlist> + <listitem><para><emphasis>4.3 Modifying Temporary Source Code</emphasis> + </para></listitem> + <listitem><para><emphasis>5.1 Understanding and Creating Layers</emphasis> + </para></listitem> + <listitem><para><emphasis>4.1.2 Modifying the Kernel</emphasis> + (This section should be retired, as well as 5.6, 5.7 - with this document + providing the necessary information)</para></listitem> + </itemizedlist></para></listitem> </itemizedlist> </para> <para> - For general information on the Yocto Project, visit the website at - <ulink url='&YOCTO_HOME_URL;'></ulink>. + Finally, while this document focuses on the manual creation of recipes, patches, +and configuration files, the Yocto Project BSP tools are available to automate +this process with existing content and work well to create the initial framework +and boilerplate code. For details, refer to the Yocto Project BSP Developer's +Guide. </para> </section> - - - - - - </chapter> <!-- vim: expandtab tw=80 ts=4 |
