Re: RTEMS uC5282 with included tarball

[Eric Norum <norume@aps.anl.gov>]

On Jun 6, 2007, at 4:08 PM, Phillip Sorensen wrote:

> Hi all,
>
> I am stating to work on a project using RTEMS on the uC5282  
> processor card.  I noticed that the source has the ability to use a  
> tarball included in the image for the st.cmd file, etc.
>
> I have not found any documentation on how to build a image with the  
> included tarball, or build the tarball.  Does anyone use this  
> feature? How is it done?

You create a tarball of the files you wish to include in the 'in- 
memory filesystem' and simply append the tarball to the executable  
image.  The tarball filesystem doesn't take away from RAM during  
operation -- the RTEMS driver implements 'copy on write' .  As long  
as you don't try to write any file the tarball stays completely in  
flash.

Here's a script I put together that does this and also makes some  
changes to iocsh environment variables and such.  At the moment it  
adjusts only the 'TOP' iocsh environment variable.  It also looks for  
some APS-specific files in the 'asdstd' directory -- you'll likely  
want to remove the line that refers to that directory.

Hope this is of some assistance.

Attachment: makeStandaloneIoc.sh
Description: Binary data

--
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793