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1<?xml version='1.0' encoding='UTF-8'?> 1<?xml version='1.0' encoding='UTF-8'?>
2<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> 2<!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3 3
4<!-- The content of this document is licensed under the CC-BY-SA license --> 4<!-- The content of this document is licensed under the CC-BY-SA license -->
5<!-- See http://creativecommons.org/licenses/by-sa/1.0 --> 5<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
6 6
7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-kernel.xml,v 1.15 2004/12/26 14:32:07 swift Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-kernel.xml,v 1.35 2006/12/06 19:59:09 nightmorph Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<version>1.12</version> 11<version>7.1</version>
12<date>2004-12-26</date> 12<date>2006-12-06</date>
13 13
14<section> 14<section>
15<title>Timezone</title> 15<title>Timezone</title>
16<body> 16<body>
17 17
18<p> 18<p>
19You first need to select your timezone so that your system knows where it is 19You first need to select your timezone so that your system knows where it is
20located. Look for your timezone in <path>/usr/share/zoneinfo</path>, then make a 20located. Look for your timezone in <path>/usr/share/zoneinfo</path>, then copy
21symlink to <path>/etc/localtime</path> using <c>ln</c>: 21it to <path>/etc/localtime</path>. Please avoid the
22<path>/usr/share/zoneinfo/Etc/GMT*</path> timezones as their names do not
23indicate the expected zones. For instance, <path>GMT-8</path> is in fact GMT+8.
22</p> 24</p>
23 25
24<pre caption="Setting the timezone information"> 26<pre caption="Setting the timezone information">
25# <i>ls /usr/share/zoneinfo</i> 27# <i>ls /usr/share/zoneinfo</i>
26<comment>(Suppose you want to use GMT)</comment> 28<comment>(Suppose you want to use GMT)</comment>
27# <i>ln -sf /usr/share/zoneinfo/GMT /etc/localtime</i> 29# <i>cp /usr/share/zoneinfo/GMT /etc/localtime</i>
28</pre> 30</pre>
29 31
30</body> 32</body>
31</section> 33</section>
32<section> 34<section>
42available at the <uri link="/doc/en/gentoo-kernel.xml">Gentoo Kernel 44available at the <uri link="/doc/en/gentoo-kernel.xml">Gentoo Kernel
43Guide</uri>. 45Guide</uri>.
44</p> 46</p>
45 47
46<p> 48<p>
47For alpha-based systems we have <c>vanilla-sources</c> (the default kernel 49For alpha-based systems we have <c>vanilla-sources</c> (the default 2.6 kernel source).
48source as developed by the linux-kernel developers), <c>alpha-sources</c>
49(kernel source optimized for alpha users) and <c>compaq-sources</c> (kernel
50source as used by RedHat for Alpha, maintained by Compaq).
51</p> 50</p>
52 51
53<p> 52<p>
54Choose your kernel source and install it using <c>emerge</c>. 53Choose your kernel source and install it using <c>emerge</c>.
55</p> 54</p>
56 55
57<p> 56<p>
58In the next example we install the <c>vanilla-sources</c>. 57In the next example we install the <c>vanilla-sources</c>.
59Of course substitute with your choice of sources, this is merely an example: 58Of course substitute with your choice of sources, this is merely an example.
59The <c>USE="-doc"</c> is necessary to avoid installing xorg-x11 or other
60dependencies at this point. <c>USE="symlink"</c> is not necessary for a new
61+install, but ensures proper creation of the <path>/usr/src/linux</path>
62+symlink.
60</p> 63</p>
61 64
62<pre caption="Installing a kernel source"> 65<pre caption="Installing a kernel source">
63# <i>emerge vanilla-sources</i> 66# <i>USE="-doc symlink" emerge vanilla-sources</i>
64</pre> 67</pre>
65 68
66<p> 69<p>
67When you take a look in <path>/usr/src</path> you should see a symlink called 70When you take a look in <path>/usr/src</path> you should see a symlink called
68<path>linux</path> pointing to your kernel source: 71<path>linux</path> pointing to your kernel source. In this case, the installed
72kernel source points to <c>vanilla-sources-2.6.16.19</c>. Your version may be
73different, so keep this in mind.
69</p> 74</p>
70 75
71<pre caption="Viewing the kernel source symlink"> 76<pre caption="Viewing the kernel source symlink">
72# <i>ls -l /usr/src/linux</i> 77# <i>ls -l /usr/src/linux</i>
73lrwxrwxrwx 1 root root 12 Oct 13 11:04 /usr/src/linux -&gt; linux-2.4.24 78lrwxrwxrwx 1 root root 12 Oct 13 11:04 /usr/src/linux -&gt; linux-2.6.16.19
74</pre>
75
76<p>
77If this isn't the case (i.e. the symlink points to a different kernel source)
78change the symlink before you continue:
79</p>
80
81<pre caption="Changing the kernel source symlink">
82# <i>rm /usr/src/linux</i>
83# <i>cd /usr/src</i>
84# <i>ln -s linux-2.4.24 linux</i>
85</pre> 79</pre>
86 80
87<p> 81<p>
88Now it is time to configure and compile your kernel source. You 82Now it is time to configure and compile your kernel source. You
89can use <c>genkernel</c> for this, which will build a generic kernel as used 83can use <c>genkernel</c> for this, which will build a generic kernel as used
90by the LiveCD. We explain the "manual" configuration first though, as it is 84by the Installation CD. We explain the "manual" configuration first though, as it is
91the best way to optimize your environment. 85the best way to optimize your environment.
92</p> 86</p>
93 87
94<p> 88<p>
95If you want to manually configure your kernel, continue now with <uri 89If you want to manually configure your kernel, continue now with <uri
113couple of kernels you don't even remember that it was difficult ;) 107couple of kernels you don't even remember that it was difficult ;)
114</p> 108</p>
115 109
116<p> 110<p>
117However, one thing <e>is</e> true: you must know your system when you start 111However, one thing <e>is</e> true: you must know your system when you start
118configuring a kernel manually. Most information can be gathered by viewing the 112configuring a kernel manually. Most information can be gathered by emerging
119contents of <path>/proc/pci</path> (or by using <c>lspci</c> if available). You 113pciutils (<c>emerge pciutils</c>) which contains <c>lspci</c>. You will now
114be able to use <c>lspci</c> within the chrooted environment. You may safely
115ignore any <e>pcilib</e> warnings (like pcilib: cannot open
116/sys/bus/pci/devices) that <c>lspci</c> throws out. Alternatively, you can run
117<c>lspci</c> from a <e>non-chrooted</e> environment. The results are the same.
120can also run <c>lsmod</c> to see what kernel modules the LiveCD uses (it might 118You can also run <c>lsmod</c> to see what kernel modules the Installation CD
121provide you with a nice hint on what to enable). 119uses (it might provide you with a nice hint on what to enable).
122</p> 120</p>
123 121
124<p> 122<p>
125Now go to your kernel source directory and execute <c>make menuconfig</c>. This 123Now go to your kernel source directory and execute <c>make menuconfig</c>. This
126will fire up an ncurses-based configuration menu. 124will fire up an ncurses-based configuration menu.
146<p> 144<p>
147First of all, activate the use of development and experimental code/drivers. 145First of all, activate the use of development and experimental code/drivers.
148You need this, otherwise some very important code/drivers won't show up: 146You need this, otherwise some very important code/drivers won't show up:
149</p> 147</p>
150 148
151<pre caption="Selecting experimental code/drivers"> 149<pre caption="Selecting experimental code/drivers, General setup">
152Code maturity level options ---&gt; 150Code maturity level options ---&gt;
153 [*] Prompt for development and/or incomplete code/drivers 151 [*] Prompt for development and/or incomplete code/drivers
152General setup ---&gt;
153 [*] Support for hot-pluggable devices
154</pre> 154</pre>
155 155
156<p> 156<p>
157Now go to <c>File Systems</c> and select support for the filesystems you use. 157Now go to <c>File Systems</c> and select support for the filesystems you use.
158<e>Don't</e> compile them as modules, otherwise your Gentoo system will not be 158<e>Don't</e> compile them as modules, otherwise your Gentoo system will not be
159able to mount your partitions. Also select <c>Virtual memory</c>, <c>/proc 159able to mount your partitions. Also select <c>Virtual memory</c> and <c>/proc
160file system</c>, <c>/dev file system</c> + <c>Automatically mount at boot</c>: 160file system</c>. If you are using a 2.4 kernel, you should also select the
161<c>/dev file system</c> and <c>Automatically mount at boot</c> options, and
162you should make sure to <c>emerge devfsd</c>.
161</p> 163</p>
162 164
163<pre caption="Selecting necessary file systems"> 165<pre caption="Selecting necessary file systems">
164<comment>(With a 2.4.x kernel)</comment> 166<comment>(With a 2.4.x kernel)</comment>
165File systems ---&gt; 167File systems ---&gt;
171 173
172<comment>(With a 2.6.x kernel)</comment> 174<comment>(With a 2.6.x kernel)</comment>
173File systems ---&gt; 175File systems ---&gt;
174 Pseudo Filesystems ---&gt; 176 Pseudo Filesystems ---&gt;
175 [*] /proc file system support 177 [*] /proc file system support
176 [*] /dev file system support (OBSOLETE)
177 [*] Automatically mount at boot
178 [*] Virtual memory file system support (former shm fs) 178 [*] Virtual memory file system support (former shm fs)
179 179
180<comment>(Select one or more of the following options as needed by your system)</comment> 180<comment>(Select one or more of the following options as needed by your system)</comment>
181 &lt;*&gt; Reiserfs support 181 &lt;*&gt; Reiserfs support
182 &lt;*&gt; Ext3 journalling file system support 182 &lt;*&gt; Ext3 journalling file system support
285<title>Compiling and Installing</title> 285<title>Compiling and Installing</title>
286<body> 286<body>
287 287
288<p> 288<p>
289Now that your kernel is configured, it is time to compile and install it. Exit 289Now that your kernel is configured, it is time to compile and install it. Exit
290the configuration and run <c>make dep &amp;&amp; make vmlinux modules 290the configuration and start the compilation process:
291modules_install</c>:
292</p> 291</p>
293 292
294<pre caption="Compiling the kernel"> 293<pre caption="Compiling the kernel">
295<comment>(For 2.4 kernel)</comment> 294<comment>(For 2.4 kernel)</comment>
296# <i>make dep &amp;&amp; make vmlinux modules modules_install</i> 295# <i>make dep &amp;&amp; make vmlinux modules modules_install</i>
302# <i>make boot</i> 301# <i>make boot</i>
303</pre> 302</pre>
304 303
305<p> 304<p>
306When the kernel has finished compiling, copy the kernel image to 305When the kernel has finished compiling, copy the kernel image to
307<path>/boot</path>. In the next example we assume you have configured and 306<path>/boot</path>. Recent kernels might create <path>vmlinux</path> instead of
308compiled <c>vanilla-sources-2.4.24</c>; recent kernels might create 307<path>vmlinux.gz</path>. Keep this in mind when you copy your kernel image.
309<path>vmlinux</path> instead of <path>vmlinux.gz</path>.
310</p> 308</p>
311 309
312<pre caption="Installing the kernel"> 310<pre caption="Installing the kernel">
313# <i>cp arch/alpha/boot/vmlinux.gz /boot/</i> 311# <i>cp arch/alpha/boot/vmlinux.gz /boot/</i>
314# <i>cp System.map /boot/System.map-2.4.24</i>
315</pre>
316
317<p>
318It is also wise to copy over your kernel configuration file to
319<path>/boot</path>, just in case :)
320</p>
321
322<pre caption="Backing up your kernel configuration">
323# <i>cp .config /boot/config-2.4.24</i>
324</pre> 312</pre>
325 313
326<p> 314<p>
327Now continue with <uri link="#kernel_modules">Installing Separate Kernel 315Now continue with <uri link="#kernel_modules">Installing Separate Kernel
328Modules</uri>. 316Modules</uri>.
342 330
343<p> 331<p>
344Now that your kernel source tree is installed, it's now time to compile your 332Now that your kernel source tree is installed, it's now time to compile your
345kernel by using our <c>genkernel</c> script to automatically build a kernel for 333kernel by using our <c>genkernel</c> script to automatically build a kernel for
346you. <c>genkernel</c> works by configuring a kernel nearly identically to the 334you. <c>genkernel</c> works by configuring a kernel nearly identically to the
347way our LiveCD kernel is configured. This means that when you use 335way our Installation CD kernel is configured. This means that when you use
348<c>genkernel</c> to build your kernel, your system will generally detect all 336<c>genkernel</c> to build your kernel, your system will generally detect all
349your hardware at boot-time, just like our Live CD does. Because genkernel 337your hardware at boot-time, just like our Installation CD does. Because genkernel
350doesn't require any manual kernel configuration, it is an ideal solution for 338doesn't require any manual kernel configuration, it is an ideal solution for
351those users who may not be comfortable compiling their own kernels. 339those users who may not be comfortable compiling their own kernels.
352</p> 340</p>
353 341
354<p> 342<p>
372module). 360module).
373</p> 361</p>
374 362
375<pre caption="Running genkernel"> 363<pre caption="Running genkernel">
376# <i>genkernel all</i> 364# <i>genkernel all</i>
377GenKernel v3.0.1_beta10 365* Gentoo Linux Genkernel; Version 3.4.0
378* ARCH: Alpha 366* Running with options: all
379* KERNEL VER: 2.4.24 367
380* kernel: configuring source 368* Linux Kernel 2.6.16.19 for alpha...
381* kernel: running mrproper 369* kernel: >> Running mrproper...
382<comment>(Output removed to increase readability)</comment> 370<comment>(Output removed to increase readability)</comment>
383* Kernel compiled successfully! 371* Kernel compiled successfully!
372*
384* Required Kernel Params: 373* Required Kernel Parameters:
385* : root=/dev/ram0 init=/linuxrc real_root=/dev/$ROOT 374* real_root=/dev/$ROOT
375*
386* where $ROOT is the devicenode for your root partition as 376* Where $ROOT is the device node for your root partition as the
387* you should have specified in /etc/fstab 377* one specified in /etc/fstab
388* 378*
389* You MUST tell your bootloader to use the generated initrd 379* If you require Genkernel's hardware detection features; you MUST
390* 380* tell your bootloader to use the provided INITRAMFS file. Otherwise;
391* Recommended Kernel Params: 381* substitute the root argument for the real_root argument if you are
392* : vga=0x317 splash=verbose 382* not planning to use the initrd...
393* 383
394* Do NOT report kernel bugs (configs included) as genkernel bugs. 384* WARNING... WARNING... WARNING...
385* Additional kernel cmdline arguments that *may* be required to boot properly...
386* Do NOT report kernel bugs as genkernel bugs unless your bug
387* is about the default genkernel configuration...
388*
395* Make sure you have the latest genkernel before reporting bugs 389* Make sure you have the latest genkernel before reporting bugs.
396*
397* For more info see /usr/share/genkernel/README
398</pre> 390</pre>
399 391
400<p> 392<p>
401Once <c>genkernel</c> completes, a kernel, full set of modules and 393Once <c>genkernel</c> completes, a kernel, full set of modules and
402<e>initial root disk</e> (initrd) will be created. We will use the kernel 394<e>initial root disk</e> (initrd) will be created. We will use the kernel
403and initrd when configuring a boot loader later in this document. Write 395and initrd when configuring a boot loader later in this document. Write
404down the names of the kernel and initrd as you will need it when writing 396down the names of the kernel and initrd as you will need it when writing
405the bootloader configuration file. The initrd will be started immediately after 397the bootloader configuration file. The initrd will be started immediately after
406booting to perform hardware autodetection (just like on the Live CD) before 398booting to perform hardware autodetection (just like on the Installation CD) before
407your "real" system starts up. 399your "real" system starts up.
408</p> 400</p>
409 401
410<pre caption="Checking the created kernel image name and initrd"> 402<pre caption="Checking the created kernel image name and initrd">
411# <i>ls /boot/kernel* /boot/initrd*</i> 403# <i>ls /boot/kernel* /boot/initramfs-*</i>
412</pre> 404</pre>
413 405
414<p> 406<p>
415Now, let's perform one more step to get our system to be more like the Live 407Now, let's perform one more step to get our system to be more like the
416CD -- let's emerge <c>coldplug</c>. While the initrd autodetects hardware that 408Installation CD -- let's emerge <c>coldplug</c>. While the initrd autodetects
417is needed to boot your system, <c>coldplug</c> autodetects everything else. 409hardware that is needed to boot your system, <c>coldplug</c> autodetects
418To emerge and enable <c>coldplug</c>, type the following: 410everything else. To emerge and enable <c>coldplug</c>, type the following:
419</p> 411</p>
420 412
421<pre caption="Emerging and enabling coldplug"> 413<pre caption="Emerging and enabling coldplug">
422# <i>emerge coldplug</i> 414# <i>emerge coldplug</i>
423# <i>rc-update add coldplug default</i> 415# <i>rc-update add coldplug boot</i>
424</pre> 416</pre>
417
418<note>
419You no longer need to emerge <c>coldplug</c> if you're using <c>udev</c> version
420103 and higher. If you receive a message that <c>udev</c> blocks <c>coldplug</c>
421from being installed, then you don't need to install <c>coldplug</c>.
422</note>
425 423
426</body> 424</body>
427</section> 425</section>
428<section id="kernel_modules"> 426<section id="kernel_modules">
429<title>Installing Separate Kernel Modules</title> 427<title>Installing Separate Kernel Modules</title>
444 <th>Ebuild</th> 442 <th>Ebuild</th>
445 <th>Purpose</th> 443 <th>Purpose</th>
446 <th>Command</th> 444 <th>Command</th>
447</tr> 445</tr>
448<tr> 446<tr>
449 <ti>xfree-drm (or x11-drm)</ti> 447 <ti>x11-drm</ti>
450 <ti> 448 <ti>
451 Accelerated graphics for ATI Radeon up to 9200, Rage128, Matrox, Voodoo and 449 Accelerated graphics for ATI Radeon up to 9200, Rage128, Matrox, Voodoo and
452 other cards for XFree86. Please check the <c>IUSE_VIDEO_CARDS</c> variable 450 other cards for xorg-x11. Please check the <c>IUSE_VIDEO_CARDS</c> variable
453 in the <path>/usr/portage/x11-base/xfree-drm</path> ebuilds to see what you 451 in the <path>/usr/portage/x11-base/x11-drm</path> ebuilds to see what you
454 need to fill in as <c>yourcard</c>. The xfree-drm ebuild has been renamed to 452 need to fill in as <c>yourcard</c>.
455 x11-drm after the 2004.3 release.
456 </ti> 453 </ti>
457 <ti><c>VIDEO_CARDS="yourcard" emerge xfree-drm</c></ti> 454 <ti><c>VIDEO_CARDS="yourcard" emerge x11-drm</c></ti>
458</tr> 455</tr>
459</table> 456</table>
460 457
461<p> 458<p>
462Beware though, some of these ebuilds might deal with big dependencies. To verify 459Beware though, some of these ebuilds might deal with big dependencies. To verify
463what packages will be installed by emerging an ebuild, use <c>emerge 460what packages will be installed by emerging an ebuild, use <c>emerge
464--pretend</c>. For instance, for the <c>xfree-drm</c> package: 461--pretend</c>. For instance, for the <c>x11-drm</c> package:
465</p> 462</p>
466 463
467<pre caption="View full installation package listing"> 464<pre caption="View full installation package listing">
468# <i>emerge --pretend xfree-drm</i> 465# <i>emerge --pretend x11-drm</i>
469</pre> 466</pre>
470 467
471</body> 468</body>
472</subsection> 469</subsection>
473<subsection> 470<subsection>
504<pre caption="/etc/modules.autoload.d/kernel-2.4 or kernel-2.6"> 501<pre caption="/etc/modules.autoload.d/kernel-2.4 or kernel-2.6">
5053c59x 5023c59x
506</pre> 503</pre>
507 504
508<p> 505<p>
509Now run <c>modules-update</c> to commit your changes to the
510<path>/etc/modules.conf</path> file:
511</p>
512
513<pre caption="Running modules-update">
514# <i>modules-update</i>
515</pre>
516
517<p>
518Continue the installation with <uri link="?part=1&amp;chap=8">Configuring 506Continue the installation with <uri link="?part=1&amp;chap=8">Configuring
519your System</uri>. 507your System</uri>.
520</p> 508</p>
521 509
522</body> 510</body>

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