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<TITLE>Open RTLinux Installation Instructions</TITLE>
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<P>
<H1 ALIGN="CENTER">Open RTLinux Installation Instructions</H1>
<P ALIGN="CENTER"><STRONG>FSM Labs, Inc.<A NAME="tex2html2"
HREF="#foot172"><SUP>1</SUP></A>
<BR>
<A NAME="tex2html3"
HREF="http://www.fsmlabs.com"><TT>http://www.fsmlabs.com</TT></A>
</STRONG></P>
<P>
<H3>Abstract:</H3>
<DIV>
This document is intended to guide the user through the installation
steps needed to compile and install RTLinux from the Web.
</DIV>
<P>
<P>
<BR>
<H2><A NAME="SECTION00010000000000000000">
Contents</A>
</H2>
<!--Table of Contents-->
<UL>
<LI><A NAME="tex2html18"
HREF="Installation.html">Preparing for Installation</A>
<UL>
<LI><A NAME="tex2html19"
HREF="#SECTION00021000000000000000">Downloading Linux Kernel</A>
<LI><A NAME="tex2html20"
HREF="#SECTION00022000000000000000">Notes on other software</A>
</UL>
<BR>
<LI><A NAME="tex2html21"
HREF="#SECTION00030000000000000000">RTLinux Installation</A>
<LI><A NAME="tex2html22"
HREF="#SECTION00040000000000000000">Post Installation and Running RTLinux Programs</A>
<LI><A NAME="tex2html23"
HREF="#SECTION00050000000000000000">Documentation and Sources of Help</A>
<LI><A NAME="tex2html24"
HREF="#SECTION00060000000000000000">About this document ...</A>
</UL>
<!--End of Table of Contents-->
<P>
<H1><A NAME="SECTION00020000000000000000">
Preparing for Installation</A>
</H1>
<P>
<H2><A NAME="SECTION00021000000000000000">
Downloading Linux Kernel</A>
</H2>
<P>
In order to compile the RTLinux kernel, first you need to download the
kernel for which RTLinux was built. To do so, note that there are
patches in the top-level directory by the name <TT>kernel_patch*</TT>. For RTLinux 3.1, these files are:
<P>
<UL>
<LI><TT>kernel_patch-2.2.19</TT>, and
</LI>
<LI><TT>kernel_patch-2.4.4</TT>
</LI>
</UL>
<P>
Where:
<P>
<UL>
<LI><TT>kernel_patch-2.2.19</TT> is for kernel 2.2.19 which can be found
at
<A NAME="tex2html4"
HREF="http://ftp.kernel.org/pub/linux/kernel/v2.2/linux-2.2.19.tar.gz">http://ftp.kernel.org/pub/linux/kernel/v2.2/linux-2.2.19.tar.gz</A>
<P>
</LI>
<LI><TT>kernel_patch-2.4</TT> is for Linux kernel 2.4.4 which
can be found at
<A NAME="tex2html5"
HREF="http://ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.4.tar.gz"><TT>http://ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.4.tar.gz</TT></A>
</LI>
</UL>
<P>
<H2><A NAME="SECTION00022000000000000000">
Notes on other software</A>
</H2>
<P>
Please make sure you have all software required to run the specific
kernel version. This information can be found in Documentation/Changes file
in the kernel tree.
<P>
In particular, RedHat 7.0 and 7.1 systems tend to have problems with
compiling RTLinux kernels because of wrong gcc versions in these
distributions.
<P>
<H1><A NAME="SECTION00030000000000000000">
RTLinux Installation</A>
</H1>
<P>
<OL>
<LI>Choose a directory for RTLinux installation. In this example, we
will use /usr/src/rtlinux. We will also assume that you have put
Linux kernels and the rtlinux distributions into /var/tmp. You can
choose any other directories for your installation.
<P>
</LI>
<LI>unpack the chosen Linux kernel into this directory:
<P>
<UL>
<LI><B>rm -rf /usr/src/rtlinux</B>
</LI>
<LI><B>mkdir /usr/src/rtlinux</B>
</LI>
<LI><B>cd /usr/src/rtlinux</B>
</LI>
<LI><B>tar xzf /var/tmp/linux-2.2.19.tar.gz</B>
</LI>
</UL>
<P>
</LI>
<LI>unpack the RTLinux distribution:
<P>
<UL>
<LI><B>tar xzf /var/tmp/rtlinux-3.1.tar.gz</B>
</LI>
</UL>
<P>
</LI>
<LI>Patch the kernel with the RTLinux patch:
<P>
<UL>
<LI><B>cd linux</B>
</LI>
<LI><B>patch -p1 < ../rtlinux-3.1/kernel_patch-2.2.19</B>
</LI>
</UL>
<P>
OR, if you're using a 2.4.xx kernel:
<P>
<UL>
<LI><B>cd linux</B>
</LI>
<LI><B>patch -p1 < /usr/src/rtlinux/kernel_patch-2.4.4</B>
</LI>
</UL>
<P>
</LI>
<LI>Next, you need to configure the Linux kernel:
<P>
<UL>
<LI><B>make config</B>
OR <B>make menuconfig</B>
OR <B>make xconfig</B>
</LI>
</UL>
<P>
Enabling APM support is not recommended. APM BIOS calls may have
unpredictable effect on real-time performance.
<P>
On Alpha machines, you need to enable RTLinux Support
(CONFIG_RTLINUX). On i386 and PPC, this is done automatically.
<P>
Please make sure to specify the correct CPU type for the target
machine.
<P>
</LI>
<LI>Compile the Linux kernel and modules:
<P>
<UL>
<LI><B>make bzImage</B>
On PPC and Alpha use <B>make vmlinux</B>
</LI>
<LI><B>make modules</B>
</LI>
</UL>
<P>
Install the Linux kernel and modules:
<P>
<UL>
<LI><B>make modules_install</B>
</LI>
<LI><B>cp arch/i386/boot/bzImage /boot/rtzImage</B>
For non-x86, please use procedures appropriate for your boot
loader.
</LI>
</UL>
<P>
</LI>
<LI>(x86-only) Configure LILO. To do so, edit /etc/lilo.conf to contain the
following piece (you only need to do this once):
<P><PRE>
image=/boot/rtzImage
label=rtlinux
read-only
root=/dev/hda1
</PRE>
<P>
<B>WARNING:</B> replace <TT>root=/dev/hda1</TT> in the above with your
root filesystem. The easiest way to find out which filesystem it
should be, take a look at the existing entry in your /etc/lilo.conf
for "root=". Alternatively, type "df", and look for the line for
"/" in the "mounted on" column. The corresponding entry in the
"Filesystem" column is your root filesystem.
<P>
</LI>
<LI>Install LILO:
<UL>
<LI><B>/sbin/lilo</B>
</LI>
</UL>
<P>
Restart the computer:
<P>
<UL>
<LI><B>/sbin/shutdown -r now</B>
</LI>
</UL>
<P>
Load the RTLinux kernel: At the LILO: prompt, press "Shift" or
"Tab". This will give you a listing of the available kernels.
Enter:
<P>
<UL>
<LI><B>rtlinux</B>
</LI>
</UL>
<P>
The RTLinux kernel should boot.
<P>
The next step is to compile RTLinux proper.
<P>
<UL>
<LI><B>cd /usr/src/rtlinux/rtlinux-3.1</B>
</LI>
<LI><B>ln -sf /usr/src/rtlinux/linux linux</B>
</LI>
</UL>
<P>
</LI>
<LI>Configure RTLinux:
<UL>
<LI><B>make config</B>
OR <B>make menuconfig</B>
OR <B>make xconfig</B>
</LI>
</UL>
<P>
</LI>
<LI>Compile RTLinux:
<UL>
<LI><B>make</B>
</LI>
<LI><B>make devices</B>
</LI>
</UL>
<P>
</LI>
</OL>
<P>
<H1><A NAME="SECTION00040000000000000000">
Post Installation and Running RTLinux Programs</A>
</H1>
<P>
To be able to run any programs, you must first load the rtlinux
modules. To do so, type:
<P>
<UL>
<LI><B>cd /usr/src/rtlinux/rtlinux-3.1</B>
</LI>
<LI><B>scripts/insrtl</B>
</LI>
</UL>
<P>
You can also try running the examples. To do so, simply go to the
appropriate directory under <TT>/usr/src/rtlinux/rtlinux-3.1/examples</TT> and
follow the instructions in the corresponding README file.
<P>
<H1><A NAME="SECTION00050000000000000000">
Documentation and Sources of Help</A>
</H1>
<P>
The <TT>docs/html/GettingStarted</TT> document contains a brief
introduction to RTLinux. Additional documents in <TT>docs/html</TT> also
provide information about other aspects to RTLinux such as web
installation, CD installation, FAQ, and RTiC-Lab.
<P>
In case of problems, please consult the FAQ first, available in the
<TT>docs/</TT> directory.
<P>
If all of the above fails, you can obtain help from your peers via the
<A NAME="tex2html8"
HREF="mailto:rtl@rtlinux.org"><TT>rtl@rtlinux.org</TT></A>
mailing list
for which you can un/subscribe to via
<A NAME="tex2html9"
HREF="http://www.rtlinux.org/mailing_lists.html"><TT>http://www.rtlinux.org/mailing_lists.html</TT></A>
.
<P>
FSM Labs further provides commercial support, development, and
training. Please contact FSM Labs at
<P>
<BLOCKQUOTE>
<A NAME="tex2html6"
HREF="mailto:business@fsmlabs.com"><TT>business@fsmlabs.com</TT></A>
</BLOCKQUOTE>
<P>
or visit their website at
<P>
<BLOCKQUOTE>
<A NAME="tex2html7"
HREF="http://www.fsmlabs.com"><TT>http://www.fsmlabs.com</TT></A>
</BLOCKQUOTE>
<P>
for additional information.
<H1><A NAME="SECTION00060000000000000000">
About this document ...</A>
</H1>
Copyright: 2001 FSM Labs, Inc.
<BR><HR><H4>Footnotes</H4>
<DL>
<DT><A NAME="foot172">... Inc.</A><A NAME="foot172"
HREF="Installation.html#tex2html2"><SUP>1</SUP></A>
<DD>
<A NAME="tex2html1"
HREF="mailto:support@fsmlabs.com"><TT>support@fsmlabs.com</TT></A>
</DL><HR>
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<ADDRESS>
Michael Barabanov
2001-06-20
</ADDRESS>
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