source: BOOK/boot/x86/kernel.xml@ 5548691

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>

<sect1 id="ch-boot-kernel" role="wrap">
  <?dbhtml filename="kernel.html"?>

  <title>Linux-&linux-version;</title>

  <indexterm zone="ch-boot-kernel">
    <primary sortas="a-Linux">Linux</primary>
    <secondary>boot</secondary>
  </indexterm>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="../../bootable/x86/kernel.xml"
  xpointer="xpointer(//*[@role='package'])"/>

  <sect2 role="installation">
    <title>Installation of the kernel</title>

    <warning os="aa">
      <para>Here a temporary cross-compiled kernel will be built. When
      configuring it, select the minimal amount of options required to can
      boot the target machine and build the final system. I.e., not support
      for sound, printers, etc. will be needed.</para>

      <para>Also, try to avoid the use of modules if possible, and don't
      use the resulting kernel image for production systems.</para>
    </warning>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='a'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='b'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='c'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='d'])"/>

    <para os="ab">If your keyboard isn't an US one, you may want to build
    the proper keymap for your keyboard layout inside the kernel. Do it by
    running the following command:</para>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='f'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='g'])"/>

    <para os="ac">Also, ensure that the kernel does not attempt to pass
    hotplugging events to userspace until userspace specifies that it is
    ready:</para>

<screen os="ad"><userinput>cp kernel/kmod.c{,.bak}
sed 's@/sbin/hotplug@/bin/true@' kernel/kmod.c.bak > kernel/kmod.c</userinput></screen>

    <para os="ae">Configure the kernel via a menu-driven interface:</para>

<screen><userinput>make ARCH=i386 CROSS_COMPILE=${LFS_TARGET}- menuconfig</userinput></screen>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='l'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='m'])"/>

<screen><userinput>make ARCH=i386 CROSS_COMPILE=${LFS_TARGET}-</userinput></screen>

    <para os="af">If the use of kernel modules can't be avoided, an
    <filename>${LFS}/etc/modprobe.conf</filename> file may be needed.
    Information pertaining to modules and kernel configuration is
    located in the kernel documentation in the <filename
    class="directory">Documentation</filename> directory of the kernel
    sources tree. The <filename>modprobe.conf</filename> man page may also
    be of interest.</para>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='p'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='q'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='s'])"/>

<screen><userinput>make ARCH=i386 CROSS_COMPILE=${LFS_TARGET}- \
   INSTALL_MOD_PATH=${LFS} modules_install</userinput></screen>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='u'])"/>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='v'])"/>

<screen><userinput>cp arch/i386/boot/bzImage ${LFS}/boot/lfskernel-&linux-version;</userinput></screen>

    <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    href="../../bootable/x86/kernel.xml"
    xpointer="xpointer(//*[@os='x'])"/>

<screen os="x1"><userinput>cp System.map ${LFS}/boot/System.map-&linux-version;</userinput></screen>

  </sect2>

  <sect2 role="content">
    <title/>

    <para>Details on this package are located in <xref
    linkend="contents-kernel" role="."/></para>

  </sect2>

</sect1>