✎ soc:2009:pravin:journal:pxekniferomomatic

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====== Pxeknife integretion with rom-o-matic ======


===== Plan =====

provide pxe images/rom/nic with gpxe script embedded.  This script will connect to pxeknife server to get boot loader.

===== Implementation =====

In file rom-o-matic/build.php the image is compiled by following command
<code>
make -C '$dir' '$target'
</code>

I have modified it to compile with embedded image by modifying above code with
<code>
make -C '$dir' EMBEDDED_IMAGE=./pxeDHCP.gpxe '$target'
</code>

the script //./pxeDHCP.gpxe// contains following code
<code>
#!gpxe
echo "Hi, We will be using PXEKnife from URL http://www.alien.doesntexist.org/pxeknife"
echo "It is assumed that you have dhcp networking"
dhcp net0
set 209:string /pxeknife.cfg/default
set 210:string http://www.alien.doesntexist.org/pxeknife/
echo "Here we go"
chain http://www.alien.doesntexist.org/pxeknife/pxelinux.0
</code>
The code is hosted at url [[http://www.alien.doesntexist.org/pxeknife/PHP/gpxe_generation/]]



===== Problems =====

When I boot using qemu with following command
<code>
qemu -fda gpxe-git-e1000.dsk
</code>
I get following error

<code>
no such interface: net0
</code>
and booting fails :-(. I also tried with gpxe-git-3c509-eisa.dsk but same result.\\

But when I compile the the gpxe with same script and no target, it works fine


<code>
make EMBEDDED_IMAGE=./pxeDHCP.gpxe
qemu -fda bin/gpxe.dsk
</code>

==== Solution ====
Problem was that, qemu does not support all network drivers, and you need to tell qemu which device driver to emulate.
Following qemu command is working for rtl8139

===== For static IP =====
To support static IP, the plan is to have two scripts, one with DHCP and one with Static.
When DHCP fails, static will pick up and continue execution.

==== Problem ====
Second script is not getting executed.

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