/[gentoo]/xml/htdocs/doc/en/handbook/hb-install-arm-kernel.xml
Gentoo

Contents of /xml/htdocs/doc/en/handbook/hb-install-arm-kernel.xml

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.3 - (show annotations) (download) (as text)
Mon Feb 26 08:54:53 2007 UTC (7 years, 6 months ago) by nightmorph
Branch: MAIN
Changes since 1.2: +7 -13 lines
File MIME type: application/xml
removed USE=symlink by request of dsd as part of the USE flag removal from all kernel sources, bug 167703. also further vanilla-sources removals as it's unsupported.

1 <?xml version='1.0' encoding='UTF-8'?>
2 <!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3
4 <!-- The content of this document is licensed under the CC-BY-SA license -->
5 <!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
6
7 <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-arm-kernel.xml,v 1.2 2006/09/02 09:00:59 vapier Exp $ -->
8
9 <sections>
10
11 <version>7.2</version>
12 <date>2007-02-26</date>
13
14 <section>
15 <title>Timezone</title>
16 <body>
17
18 <p>
19 You first need to select your timezone so that your system knows where it is
20 located. Look for your timezone in <path>/usr/share/zoneinfo</path>, then copy
21 it to <path>/etc/localtime</path>. Please avoid the
22 <path>/usr/share/zoneinfo/Etc/GMT*</path> timezones as their names do not
23 indicate the expected zones. For instance, <path>GMT-8</path> is in fact GMT+8.
24 </p>
25
26 <pre caption="Setting the timezone information">
27 # <i>ls /usr/share/zoneinfo</i>
28 <comment>(Suppose you want to use GMT)</comment>
29 # <i>cp /usr/share/zoneinfo/GMT /etc/localtime</i>
30 </pre>
31
32 </body>
33 </section>
34 <section>
35 <title>Installing the Sources</title>
36 <subsection>
37 <title>Choosing a Kernel</title>
38 <body>
39
40 <p>
41 The core around which all distributions are built is the Linux kernel. It is the
42 layer between the user programs and your system hardware. Gentoo provides its
43 users several possible kernel sources. A full listing with description is
44 available at the <uri link="/doc/en/gentoo-kernel.xml">Gentoo Kernel
45 Guide</uri>.
46 </p>
47
48 <p>
49 For ARM systems, we will use <c>gentoo-sources</c> (contains additional patches
50 for performance and stability).
51 </p>
52
53 <p>
54 Now install it using <c>emerge</c>.
55 </p>
56
57 <pre caption="Installing a kernel source">
58 # <i>emerge gentoo-sources</i>
59 </pre>
60
61 <p>
62 When you take a look in <path>/usr/src</path> you should see a symlink called
63 <path>linux</path> pointing to your kernel source. In this case, the installed
64 kernel source points to <c>gentoo-sources-<keyval id="kernel-version"/></c>.
65 Your version may be different, so keep this in mind.
66 </p>
67
68 <pre caption="Viewing the kernel source symlink">
69 # <i>ls -l /usr/src/linux</i>
70 lrwxrwxrwx 1 root root 12 Oct 13 11:04 /usr/src/linux -&gt; linux-<keyval id="kernel-version"/>
71 </pre>
72
73 </body>
74 </subsection>
75 </section>
76 <section id="manual">
77 <title>Default: Manual Configuration</title>
78 <subsection>
79 <title>Introduction</title>
80 <body>
81
82 <p>
83 Manually configuring a kernel is often seen as the most difficult procedure a
84 Linux user ever has to perform. Nothing is less true -- after configuring a
85 couple of kernels you don't even remember that it was difficult ;)
86 </p>
87
88 <p>
89 However, one thing <e>is</e> true: you must know your system when you start
90 configuring a kernel manually. Most information can be gathered by emerging
91 pciutils (<c>emerge pciutils</c>) which contains <c>lspci</c>. You will now
92 be able to use <c>lspci</c> within the chrooted environment. You may safely
93 ignore any <e>pcilib</e> warnings (like pcilib: cannot open
94 /sys/bus/pci/devices) that <c>lspci</c> throws out. Alternatively, you can run
95 <c>lspci</c> from a <e>non-chrooted</e> environment. The results are the same.
96 You can also run <c>lsmod</c> to see what kernel modules the Installation CD
97 uses (it might provide you with a nice hint on what to enable).
98 </p>
99
100 <p>
101 Now go to your kernel source directory and execute <c>make menuconfig</c>. This
102 will fire up an ncurses-based configuration menu.
103 </p>
104
105 <pre caption="Invoking menuconfig">
106 # <i>cd /usr/src/linux</i>
107 # <i>make menuconfig</i>
108 </pre>
109
110 <p>
111 You will be greeted with several configuration sections. We'll first list some
112 options you must activate (otherwise Gentoo will not function, or not function
113 properly without additional tweaks).
114 </p>
115
116 </body>
117 </subsection>
118 <subsection>
119 <title>Activating Required Options</title>
120 <body>
121
122 <p>
123 Due to the highly specific nature of the embedded, we'll cover known
124 configurations for boards here. If your machine is not listed, then you should
125 visit the respective community website to figure out how to properly configure
126 your kernel.
127 </p>
128
129 <p>
130 Regardless of your machine, you should make sure to activate the use of
131 development and experimental code/drivers. You need this, otherwise some very
132 important code/drivers won't show up:
133 </p>
134
135 <pre caption="Selecting experimental code/drivers, General setup">
136 Code maturity level options ---&gt;
137 [*] Prompt for development and/or incomplete code/drivers
138 </pre>
139
140 <p>
141 Please select your machine from the list below to jump to the configuration
142 section.
143 </p>
144
145 <ul>
146 <li><uri link="#netwinder">NetWinder</uri></li>
147 </ul>
148
149 </body>
150 </subsection>
151 </section>
152 <section id="netwinder">
153 <title>NetWinder configuration options</title>
154 <body>
155
156 <p>
157 Remember that EXT2 support is required for the boot partition as that is the
158 only filesystem that the bootloader can read reliably. Otherwise, the only
159 filesystem that has been tested is EXT3 but your welcome to try your luck with
160 the others ;).
161 </p>
162
163 <pre caption="NetWinder configuration options">
164 <comment>First generate a default config</comment>
165 # <i>make netwinder_defconfig</i>
166
167 <comment>Required options</comment>
168 System Type ---&gt;
169 ARM system type (FootBridge) ---&gt;
170 (X) FootBridge
171 Footbridge Implementations ---&gt;
172 [*] NetWinder
173
174 Floating point emulation ---&gt;
175 [*] NWFPE math emulation
176
177 File systems ---&gt;
178 [*] Second extended fs support
179 Pseudo Filesystems ---&gt;
180 [*] /proc file system support
181 [*] Virtual memory file system support (former shm fs)
182
183 Device Drivers ---&gt;
184 ATA/ATAPI/MFM/RLL support ---&gt;
185 [*] ATA/ATAPI/MFM/RLL support
186 [*] Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support
187 [*] Include IDE/ATA-2 DISK support
188 --- IDE chipset support/bugfixes
189 [*] PCI IDE chipset support
190 [*] Winbond SL82c105 support
191 [*] Generic PCI bus-master DMA support
192 [*] Use PCI DMA by default when available
193
194 Network device support ---&gt;
195 [*] Network device support
196 Ethernet (10 or 100Mbit) ---&gt;
197 [*] Ethernet (10 or 100Mbit)
198 Tulip family network device support ---&gt;
199 [*] "Tulip" family network device support
200 [*] DECchip Tulip (dc2114x) PCI support
201 [*] Use PCI shared mem for NIC registers
202 [*] Use NAPI RX polling
203 [*] EISA, VLB, PCI and on board controllers
204 [*] PCI NE2000 and clones support
205
206 Character devices ---&gt;
207 Serial drivers ---&gt;
208 [*] 8250/16550 and compatible serial support
209 [*] Console on 8250/16550 and compatible serial port
210 --- Non-8250 serial port support
211 [*] DC21285 serial port support
212 [*] Console on DC21285 serial port
213 Watchdog Cards ---&gt;
214 [*] Watchdog Timer Support
215 [*] NetWinder WB83C977 watchdog
216 [*] NetWinder thermometer support
217 [*] NetWinder Button
218 [*] Reboot Using Button
219
220 <comment>Recommended options</comment>
221 Kernel Features ---&gt;
222 [*] Preemptible Kernel
223 [*] Timer and CPU usage LEDs
224 [*] CPU usage LED
225
226 File systems ---&gt;
227 [*] Ext3 journalling file system support
228
229 Device Drivers ---&gt;
230 Input device support ---&gt;
231 [*] Keyboards ---&gt;
232 [*] AT keyboard
233 [*] Mouse ---&gt;
234 [*] PS/2 mouse
235
236 Graphics support ---&gt;
237 [*] Support for frame buffer devices
238 [*] Enable firmware EDID
239 [*] CyberPro 2000/2010/5000 support
240 Logo configuration ---&gt;
241 [*] Bootup logo
242 [*] Standard 224-color Linux logo
243
244 Sound ---&gt;
245 [*] Sound card support
246 Open Sound System ---&gt;
247 [*] Open Sound System
248 [*] OSS sound modules
249 [*] Yamaha FM synthesizer (YM3812/OPL-3) support
250 [*] Netwinder WaveArtist
251
252 <comment>You should only enable this to upgrade your flash</comment>
253 Device Drivers ---&gt;
254 Character devices ---&gt;
255 [*] NetWinder flash support
256 </pre>
257
258 <p>
259 When you've finished configuring the kernel, continue with <uri
260 link="#compiling">Compiling and Installing</uri>.
261 </p>
262
263 </body>
264 </section>
265 <section id="compiling">
266 <title>Compiling and Installing</title>
267 <body>
268
269 <p>
270 Now that your kernel is configured, it is time to compile and install it. Exit
271 the configuration and start the compilation process:
272 </p>
273
274 <pre caption="Compiling the kernel">
275 # <i>make &amp;&amp; make modules_install</i>
276 </pre>
277
278 <p>
279 When the kernel has finished compiling, copy the kernel image to
280 <path>/boot</path>. Use whatever name you feel is appropriate for your kernel
281 choice and remember it as you will need it later on when you configure your
282 bootloader. Remember to replace <c><keyval id="kernel-name"/></c> with the
283 name and version of your kernel.
284 </p>
285
286 <pre caption="Installing the kernel">
287 # <i>cp vmlinux.gz /boot/<keyval id="kernel-name"/></i>
288 </pre>
289
290 <p>
291 Now continue with <uri link="#kernel_modules">Kernel Modules</uri>.
292 </p>
293
294 </body>
295 </section>
296 <section id="kernel_modules">
297 <title>Kernel Modules</title>
298 <subsection>
299 <title>Configuring the Modules</title>
300 <body>
301
302 <p>
303 You should list the modules you want automatically loaded in
304 <path>/etc/modules.autoload.d/kernel-2.6</path>. You can add extra options to
305 the modules too if you want.
306 </p>
307
308 <p>
309 To view all available modules, run the following <c>find</c> command. Don't
310 forget to substitute <c><keyval id="kernel-version"/></c> with the version of
311 the kernel you just compiled:
312 </p>
313
314 <pre caption="Viewing all available modules">
315 # <i>find /lib/modules/<keyval id="kernel-version"/>/ -type f -iname '*.o' -or -iname '*.ko'</i>
316 </pre>
317
318 <p>
319 For instance, to automatically load the <c>3c59x.o</c> module, edit the
320 <path>kernel-2.6</path> file and enter the module name in it.
321 </p>
322
323 <pre caption="Editing /etc/modules.autoload.d/kernel-2.6">
324 # <i>nano -w /etc/modules.autoload.d/kernel-2.6</i>
325 </pre>
326
327 <pre caption="/etc/modules.autoload.d/kernel-2.6">
328 3c59x
329 </pre>
330
331 <p>
332 Continue the installation with <uri link="?part=1&amp;chap=8">Configuring
333 your System</uri>.
334 </p>
335
336 </body>
337 </subsection>
338 </section>
339 </sections>

  ViewVC Help
Powered by ViewVC 1.1.20