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1.1 |
<?xml version='1.0' encoding='UTF-8'?> |
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<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> |
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<!-- The content of this document is licensed under the CC-BY-SA license --> |
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<!-- See http://creativecommons.org/licenses/by-sa/1.0 --> |
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swift |
1.12 |
<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ppc-kernel.xml,v 1.11 2004/09/01 10:38:46 neysx Exp $ --> |
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swift |
1.1 |
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<sections> |
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swift |
1.12 |
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<version>1.11</version> |
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<date>September 1, 2004</date> |
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swift |
1.1 |
<section> |
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<title>Timezone</title> |
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<body> |
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<p> |
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You first need to select your timezone so that your system knows where it is |
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located. Look for your timezone in <path>/usr/share/zoneinfo</path>, then make a |
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symlink to <path>/etc/localtime</path> using <c>ln</c>: |
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</p> |
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<pre caption="Setting the timezone information"> |
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# <i>ls /usr/share/zoneinfo</i> |
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<comment>(Suppose you want to use GMT)</comment> |
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# <i>ln -sf /usr/share/zoneinfo/GMT /etc/localtime</i> |
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</pre> |
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</body> |
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</section> |
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<section> |
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<title>Installing the Sources</title> |
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<subsection> |
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<title>Choosing a Kernel</title> |
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<body> |
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<p> |
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The core around which all distributions are built is the Linux kernel. It is the |
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layer between the user programs and your system hardware. Gentoo provides its |
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users several possible kernel sources. A full listing with description is |
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available at the <uri link="/doc/en/gentoo-kernel.xml">Gentoo Kernel |
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Guide</uri>. |
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</p> |
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<p> |
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neysx |
1.8 |
For PPC you can choose between <c>development-sources</c> and |
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<c>gentoo-dev-sources</c> (both 2.6 kernels). The latter is available when you |
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perform a networkless installation. Beside those there is special |
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kernel-2.6-patchset for the Pegasos: <c>pegasos-dev-sources</c>. So let's |
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continue with <c>emerge</c>'ing the kernel sources: |
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swift |
1.1 |
</p> |
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<pre caption="Installing a kernel source"> |
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dertobi123 |
1.6 |
# <i>emerge gentoo-dev-sources</i> |
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swift |
1.1 |
</pre> |
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<p> |
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When you take a look in <path>/usr/src</path> you should see a symlink called |
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<path>linux</path> pointing to your kernel source: |
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</p> |
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<pre caption="Viewing the kernel source symlink"> |
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# <i>ls -l /usr/src/linux</i> |
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dertobi123 |
1.6 |
lrwxrwxrwx 1 root root 12 Jul 10 10:55 /usr/src/linux -> linux-2.6.7-r9 |
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swift |
1.1 |
</pre> |
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<p> |
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If this isn't the case (i.e. the symlink points to a different kernel source) |
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change the symlink before you continue: |
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</p> |
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<pre caption="Changing the kernel source symlink"> |
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swift |
1.3 |
# <i>rm /usr/src/linux</i> |
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# <i>cd /usr/src</i> |
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dertobi123 |
1.6 |
# <i>ln -s linux-2.6.7-r9 linux</i> |
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swift |
1.1 |
</pre> |
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<p> |
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Now it is time to configure and compile your kernel source. All architectures |
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can use <c>genkernel</c> for this, which will build a generic kernel as used |
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by the LiveCD. We explain the "manual" configuration first though, as it is |
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the best way to optimize your environment. |
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</p> |
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<p> |
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swift |
1.2 |
Continue now with <uri link="#manual">Manual Configuration</uri>. |
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swift |
1.1 |
</p> |
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</body> |
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</subsection> |
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</section> |
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<section id="manual"> |
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swift |
1.2 |
<title>Manual Configuration</title> |
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swift |
1.1 |
<subsection> |
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<title>Introduction</title> |
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<body> |
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<p> |
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neysx |
1.10 |
Manually configuring a kernel is often seen as the most difficult procedure a |
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neysx |
1.11 |
Linux user ever has to perform. Nothing is less true -- after configuring a |
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swift |
1.1 |
couple of kernels you don't even remember that it was difficult ;) |
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</p> |
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<p> |
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However, one thing <e>is</e> true: you must know your system when you start |
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configuring a kernel manually. Most information can be gathered by viewing the |
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contents of <path>/proc/pci</path> (or by using <c>lspci</c> if available). You |
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can also run <c>lsmod</c> to see what kernel modules the LiveCD uses (it might |
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provide you with a nice hint on what to enable). |
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</p> |
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<p> |
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Now go to your kernel source directory and execute <c>make menuconfig</c>. This |
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will fire up an ncurses-based configuration menu. |
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</p> |
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<pre caption="Invoking menuconfig"> |
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# <i>cd /usr/src/linux</i> |
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# <i>make menuconfig</i> |
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</pre> |
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<p> |
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You will be greeted with several configuration sections. We'll first list some |
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options you must activate (otherwise Gentoo will not function, or not function |
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properly without additional tweaks). |
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</p> |
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</body> |
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</subsection> |
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<subsection> |
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<title>Activating Required Options</title> |
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<body> |
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<p> |
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First of all, activate the use of development and experimental code/drivers. |
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You need this, otherwise some very important code/drivers won't show up: |
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</p> |
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<pre caption="Selecting experimental code/drivers"> |
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Code maturity level options ---> |
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[*] Prompt for development and/or incomplete code/drivers |
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</pre> |
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<p> |
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Now go to <c>File Systems</c> and select support for the filesystems you use. |
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<e>Don't</e> compile them as modules, otherwise your Gentoo system will not be |
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able to mount your partitions. Also select <c>Virtual memory</c>, <c>/proc |
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file system</c>, <c>/dev file system</c> + <c>Automatically mount at boot</c>: |
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</p> |
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<pre caption="Selecting necessary file systems"> |
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dertobi123 |
1.6 |
File systems ---> |
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Pseudo Filesystems ---> |
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[*] /proc file system support |
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[*] /dev file system support (OBSOLETE) |
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[*] Automatically mount at boot |
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[*] Virtual memory file system support (former shm fs) |
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swift |
1.1 |
<comment>(Select one or more of the following options as needed by your system)</comment> |
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<*> Reiserfs support |
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<*> Ext3 journalling file system support |
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<*> Second extended fs support |
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<*> XFS filesystem support |
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</pre> |
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<p> |
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If you are using PPPoE to connect to the Internet or you are using a dial-up |
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modem, you will need the following options in the kernel: |
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</p> |
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<pre caption="Selecting PPPoE necessary drivers"> |
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neysx |
1.4 |
Device Drivers ---> |
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Networking support ---> |
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<*> PPP (point-to-point protocol) support |
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<*> PPP support for async serial ports |
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<*> PPP support for sync tty ports |
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swift |
1.1 |
</pre> |
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<p> |
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The two compression options won't harm but are not definitely needed, neither |
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does the <c>PPP over Ethernet</c> option, that might only be used by |
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<c>rp-pppoe</c> when configured to do kernel mode PPPoE. |
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</p> |
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<p> |
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If you require it, don't forget to include support in the kernel for your |
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ethernet card. |
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</p> |
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<p> |
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Disable ADB raw keycodes: |
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</p> |
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<pre caption="Disabling ADB raw keycodes"> |
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Macintosh Device Drivers ---> |
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[ ] Support for ADB raw keycodes |
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</pre> |
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<p> |
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Also choose the correct RTC support (<e>disable</e> the <c>Enhanced RTC</c> |
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option): |
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</p> |
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<pre caption="Activating the correct RTC option"> |
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Character devices ---> |
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[ ] Enhanced RTC |
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General setup ---> |
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[*] Support for /dev/rtc |
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</pre> |
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<p> |
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Users of OldWorld machines will want HFS support so they can copy compiled |
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kernels to the MacOS partition. |
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</p> |
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<pre caption="Activating HFS support"> |
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File Systems ---> |
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[*] HFS Support |
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</pre> |
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<p> |
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When you're done configuring your kernel, continue with <uri |
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link="#compiling">Compiling and Installing</uri>. |
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</p> |
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</body> |
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</subsection> |
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<subsection id="compiling"> |
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<title>Compiling and Installing</title> |
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<body> |
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<p> |
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Now that your kernel is configured, it is time to compile and install it. Exit |
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dertobi123 |
1.6 |
the configuration and run the commands which will compile the kernel: |
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swift |
1.1 |
</p> |
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<pre caption="Compiling the kernel"> |
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neysx |
1.8 |
# <i>make all && make modules_install</i> |
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swift |
1.1 |
</pre> |
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<p> |
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neysx |
1.10 |
When the kernel has finished compiling, copy the kernel image to |
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swift |
1.1 |
<path>/boot</path>. |
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</p> |
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<pre caption="Installing the kernel"> |
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dertobi123 |
1.6 |
<comment>replace 2.6.7 with your kernel-version</comment> |
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(Apple/IBM) # <i>cp vmlinux /boot/kernel-2.6.7</i> |
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(Pegasos) # <i>cp arch/ppc/boot/images/zImage.chrp /boot/kernel-2.6.7</i> |
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swift |
1.2 |
</pre> |
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<p> |
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Also don't forget to copy over the system map: |
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</p> |
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<pre caption="Copying the system map"> |
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dertobi123 |
1.6 |
# <i>cp System.map /boot/System.map-2.6.7</i> |
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swift |
1.1 |
</pre> |
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<p> |
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It is also wise to copy over your kernel configuration file to |
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<path>/boot</path>, just in case :) |
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</p> |
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<pre caption="Backing up your kernel configuration"> |
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dertobi123 |
1.6 |
# <i>cp .config /boot/config-2.6.7</i> |
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swift |
1.1 |
</pre> |
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<p> |
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Now continue with <uri link="#kernel_modules">Installing Separate Kernel |
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Modules</uri>. |
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</p> |
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</body> |
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</subsection> |
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</section> |
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<section id="kernel_modules"> |
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<title>Installing Separate Kernel Modules</title> |
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swift |
1.9 |
<!-- |
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swift |
1.1 |
<subsection> |
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<title>Installing Extra Modules</title> |
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<body> |
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<p> |
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If appropriate, you should emerge ebuilds for any additional hardware that is |
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on your system. Here is a list of kernel-related ebuilds that you could emerge: |
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</p> |
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<table> |
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<tcolumn width="1in"/> |
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<tcolumn width="4in"/> |
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<tcolumn width="2in"/> |
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<tr> |
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<th>Ebuild</th> |
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<th>Purpose</th> |
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<th>Command</th> |
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</tr> |
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</table> |
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<p> |
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Beware though, some of these ebuilds might deal with big dependencies. To verify |
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what packages will be installed by emerging an ebuild, use <c>emerge |
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swift |
1.9 |
- -pretend</c>. For instance, for the <c>xfree-drm</c> package: |
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swift |
1.1 |
</p> |
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<pre caption="View full installation package listing"> |
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swift |
1.9 |
# <i>emerge - -pretend xfree-drm</i> |
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swift |
1.1 |
</pre> |
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</body> |
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</subsection> |
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swift |
1.9 |
--> |
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swift |
1.1 |
<subsection> |
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<title>Configuring the Modules</title> |
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<body> |
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<p> |
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You should list the modules you want automatically loaded in |
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pylon |
1.7 |
<path>/etc/modules.autoload.d/kernel-2.6</path>. |
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swift |
1.1 |
You can add extra options to the modules too if you want. |
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</p> |
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<p> |
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To view all available modules, run the following <c>find</c> command. Don't |
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forget to substitute "<kernel version>" with the version of the kernel you |
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just compiled: |
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</p> |
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<pre caption="Viewing all available modules"> |
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# <i>find /lib/modules/<kernel version>/ -type f -iname '*.o' -or -iname '*.ko'</i> |
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</pre> |
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<p> |
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For instance, to automatically load the <c>3c59x.o</c> module, edit the |
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pylon |
1.7 |
<path>kernel-2.6</path> file and enter the module |
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swift |
1.1 |
name in it. |
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</p> |
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dertobi123 |
1.6 |
<pre caption="Editing /etc/modules.autoload.d/kernel-2.6"> |
| 342 |
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# <i>nano -w /etc/modules.autoload.d/kernel-2.6</i> |
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swift |
1.1 |
</pre> |
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|
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pylon |
1.7 |
<pre caption="/etc/modules.autoload.d/kernel-2.6"> |
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swift |
1.1 |
3c59x |
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</pre> |
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<p> |
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Now run <c>modules-update</c> to commit your changes to the |
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<path>/etc/modules.conf</path> file: |
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</p> |
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<pre caption="Running modules-update"> |
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# <i>modules-update</i> |
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</pre> |
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<p> |
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Continue the installation with <uri link="?part=1&chap=8">Configuring |
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your System</uri>. |
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</p> |
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|
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</body> |
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</subsection> |
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</section> |
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</sections> |
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