https://wiki.koeln.ccc.de/api.php?action=feedcontributions&user=204.0.181.196&feedformat=atomC4 Wiki - User contributions [en]2024-03-29T13:25:21ZUser contributionsMediaWiki 1.30.1https://wiki.koeln.ccc.de/index.php?title=Efika&diff=13874Efika2007-08-14T15:02:52Z<p>204.0.181.196: /* Preparations */</p>
<hr />
<div>The [http://www.efika.info EFIKA] is an embedded PowerPC board with a 400MHz 32-bit freescale MPC5200 (603e/e300), 128MB RAM, 100MBit/s NIC, 2xUSB 1.1, Soundchip, 2.5" harddisk connector, PCI and AGP (with riser-card) and serial out.<br />
<br />
[[User:Pylon|Pylon]] received a board for development work on it. I will leave it in the [[C4]], so that we can attach additional hardware on it.<br />
<br />
== Ideas for development tasks ==<br />
<br />
# [http://www.musicpd.org mpd]-server as in-replacement for the already existing one<br />
# connection to the [http://www.fnordlicht.de Fnordlicht] (built at C4's [[U23 2005]])<br />
# using [http://jackaudio.org JACK] for disco-lights<br />
<br />
== Booting ==<br />
<br />
=== Harddisk ===<br />
<br />
Currently I don't have any harddisk available, so this could not be tested. But it would be nice to create a complete stand-alone machine out of it.<br />
<br />
=== USB ===<br />
<br />
It's also possible to boot via USB. But it's only USB 1.1, so very slow.<br />
<br />
=== NFS ===<br />
<br />
I will use Gentoo/Linux on that machine. Yes, it might be slow, but it can be changed to your needs. Also it's possible to build on another PowerPC or with cross-dev.<br />
<br />
==== Setup ====<br />
;Server: 10.10.1.1<br />
;Client: 10.10.1.2<br />
<br />
==== Preparations ====<br />
# Download a stage3-tar-ball and unpack it to e.g. <tt>/nfsroot</tt>.<br />
# Change <tt>/nfsroot//etc/fstab</tt>, so that the root-filesystem will be mounted via NFS: <code>10.10.1.1:/nfsroot / nfs noatime 0 1</code><br />
# Change <tt>/nfsroot/etc/securetty</tt> and add a line for logging in later via serial-line: <code> echo ttyPSC0 >> /nfsroot/etc/securetty</code><br />
# Also add that serial-line to <tt>/nfsroot/etc/inittab</tt>: <code>echo "s0:12345:respawn:/sbin/agetty 115200 ttyPSC0 vt100" >> /nfsroot/etc/inittab</code> (you can use ''linux'' instead of ''vt100'' for a coloured term, but then you should have a good serial communicotian program)<br />
# Add a password-hash for the root-password into <tt>/nfsroot/etc/shadow</tt>. I used htpasswd2 from apache for it. Call it with <code>htpasswd -nb root secret</code>. This will create the hash for the root-user with the password ''secret''. Replace the <code>*</code> after <code>root:</code> in the shadow-file with that hash.<br />
# Give your system a hostname in <tt>/nfsroot/etc/hostname</tt> and add that hostname after the localhost-entry in <tt>/nfsroot/etc/hosts</tt><br />
# Unfortunately mounting another nfs-share for the portage-tree later will not work, as nfs-utils are not installed yet (I'm working on a special nfsroot-efika-stage4). Bind-mounting a portage-tree on a Gentoo-system will not work either (nfs just ignores that). So we have to download and unpack a current portage-snapshot into <tt>/nfsroot/usr/portage</tt>. Alternatively you can rsync your local portage-tree into <tt>/nfsroot</tt>: <code>rsync --archive --progress --exclude=packages/ --exclude=distfiles/ /usr/portage/ /nfsroot/usr/portage/</code>.<br />
# Finally unpack the [http://www.efika.de/download/modules_efika.tgz precompiled modules] into <tt>/nfsroot</tt> (<code>tar xvzf modules_efika.tgz -C /nfsroot/</code>.<br />
<br />
The nfsroot is now prepared for a first and simple boot. Let us now set up the dhcp-/tftp-/nfs-server-voodoo.<br />
sdfg<br />
<br />
==== DHCP-Server ====<br />
I use dnsmasq for the dhcp-server, as it provides the possibilty to add tftp-dhcp-boot-options. Basically you only need to set two lines in your <tt>dnsmasq.conf</tt>:<br />
<pre><br />
dhcp-range=10.10.1.2,10.10.1.2,5m<br />
dhcp-host=00:0b:2f:e7:e7:20,10.10.1.2<br />
</pre><br />
<br />
;dhcp-range: <code><first-IP-address>,<last-IP-address>,<lease-time></code><br />
;dhcp-host: <code><MAC-address>,<IP-address></code> (the MAC-address is printed on the sticker above the Ethernet-port)<br />
<br />
Probably you might also want to set some more settings for the interface on the server, routing etc. After that start the daemon.<br />
<br />
==== TFTP-Server ====<br />
This time I use atftp as TFTP-Server. This server expects <tt>/tftproot</tt> as the path for tftp-files. But it's possible to change it in the config.<br />
<br />
Now place [http://www.efika.de/download/kernel_efika the kernel] into <tt>/tftproot</tt> and start the daemon.<br />
<br />
==== NFS-Server ====<br />
Add <code>/nfsroot 10.10.1.2(rw,sync,no_root_squash)</code> to your <tt>/etc/exports</tt> and start the daemon. Make sure, that a firewall is not blocking nfs-requests. Also make sure, that <tt>/etc/hosts.{allow,deny}</tt> are set properly.<br />
<br />
==== Serial console ====<br />
Attach a null modem serial cable between the EFIKA and a PC with serial port. I use <tt>screen</tt> as serial terminal program: <code>screen -m -c /dev/null /dev/ttyS0 115200 8n1</code>.<br />
<br />
==== Booting ====<br />
Now, let's boot! Switch on the EFIKA. You should see some lines with RAM-checking etc. After that you see a prompt:<br />
<pre><br />
ok #<br />
</pre><br />
<br />
On that prompt type in <code>boot eth kernel_efika linux console=ttyPSC0 ip=dhcp panic=10 root=/dev/nfs nfsroot=10.10.1.1:/nfsroot</code>.<br />
<br />
The EFIKA should download the kernel, boot up and will provide a login-prompt. Log in with your root-password you set previously. Welcome to your EFIKA!<br />
<br />
==== Troubleshooting ====<br />
<br />
* Check your serial and network cable<br />
* Check your daemon-log-files<br />
* Check your firewall if it allows DHCP, TFTP and NFS<br />
* Check the permissions of <tt>/tftproot</tt> and <tt>/nfsroot</tt></div>204.0.181.196