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2012-02-27T17:49:05Z

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2010-03-02T14:27:47Z

NFS Root

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==Load kernel & ramdisk.gz via onboard flash==
<pre>
fis load ramdisk.gz 
fis load zImage 
exec -c "console=ttyAM0 root=/dev/ram" 
</pre>

== Load kernel from onboard flash, Root filesystem on USB flash==
<pre>
fis load zImage 
exec -c "console=ttyAM0 root=/dev/sda1 [rootdelay=10]" 
</pre>

== Load kernel via xmodem/ymodem==
===At RedBoot Shell (via Minicom)===
<pre> load -r -b 0x80000 -m {xmodem|ymodem} </pre>

===Minicom Commands===
In Minicom: Type {Ctrl-a}{s} 
Select {xmodem|ymodem} and locate file 

===Boot the kernel===
<pre> exec -c "console=ttyAM0 root=/path/to/root [rootdelay=10]" </pre>

Note: rootdelay=10 is only necessary if root is located on USB drive 
Note: xmodem/ymodem takes approximately 6 minutes to download 

== Load kernel via TFTP==
<pre>
ip_address [-l <local_ip_address>] -h <tftp_server_address> 
load -r -v -b 0x800000 ramdiskWebMod.gz 
load -r -v -b 0x80000 zImage9302_2.6.21 
exec -r 0x800000 -s <size_of_ramdisk_in_hex> -c "console=ttyAM root=/dev/ram" 
</pre>

==NFS Root==
===Desktop PC Steps===
====Compile the Kernel====
Compile the kernel according to the [http://code.google.com/p/cs-e9302/wiki/HowToCompileTheKernel walkthrough].
====Create NFS Root Filesystem on PC====
<pre>mkdir -p /ep9302/<username>/nfsroot
cp /media/CS-EP930x_A/rootdir.tgz /ep9302/<username>/nfsroot
cd /ep9302/<username>/nfsroot
tar -xzf rootdir.tgz</pre>
*NOTE: The last line will result in errors trying to create the special files in the ''dev'' directory. You will need to contact [mailto:csg@iastate.edu CSG] for access rights to create these files
*NOTE: Optionally remove line about ''/dev/sda1'' from ''/ep9302/<username>/nfsroot/dev/fstab''. This will avoid a mounting error at boot time on the EP9302 board.

===EP9302/RedBoot Steps===
=====Load your compiled kernel=====
<pre>load -r -v -b 0x80000 zImage</pre>
=====Execute the kernel=====
<pre>exec -c "console=ttyAM0 root=/dev/nfs nfsroot=<server_ip>:/path/to/root/ ip=<board_ip>"</pre>
*For me this line was ''exec -c "console=ttyAM0 root=/dev/nfs nfsroot=192.168.1.5:/ep9302/<username>/nfsroot ip=192.168.1.1"''
*NOTE: /path/to/root is path to your nfsroot directory on the desktop relative to the /ep9302 directory
*NOTE: If you receive a warning saying no console found then you need to fix the ''dev'' directory as described above.

==Links==
[http://ecos.sourceware.org/docs-latest/redboot/redboot-guide.html RedBoot Online User Guide] 
[http://www.olimex.com/dev/pdf/ARM/CIRRUS/CS-E9302.pdf EP9302 User Guide] 
[http://olimex.com/dev/cs-e930x.html Olimex Board Website] 
[http://dev.ivanov.eu/projects/cs-e9302/ EP9302 Project Website] 
[http://code.google.com/p/cs-e9302/wiki/HowToCompileTheKernel Kernel Build Walkthrough]

Useful RedBoot Commands - Revision history

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127.0.0.1: /* NFS Root */