[Avila] GW2348-4 EEProm

[Chris Lang]

David,

Gateworks only plans to use what is listed in the eeprom map file. Since
the 0.6 BSP, redboot has relied on the eeprom values to correctly
configure a board. We have added items since then to aid in ease of use.

CYGHWR_REDBOOT_FLASH_CONFIG_MEDIA_FLASH has nothing to do with what is
stored in the eeprom. 

We strongly suggest that you not use the area from 0x100 - 0x140, as it
will be used by future platforms and more projects are beginning to use
these values also like OpenWrt, which just recently added the ability to
use one image on almost all of our products based on what is contained
in the eeprom.

Thanks,

-- 
Chris Lang
Gateworks Corporation
3026 S. Higuera, San Luis Obispo, CA 93401
Ph: 805-781-2000 Fax: 805-781-2001
Email: clang at gateworks.com
Web: www.gateworks.com

On Tue, 2008-04-29 at 17:33 -0400, David Acker wrote:
> I noticed that in BSP 0.7, the new RedBoot has an EEProm configuration 
> program that uses the Atmel 1KB EEProm to store GPIO settings and a few 
> other things.  I went back and looked at the 0.6 BSP's RedBoot and it 
> looked for these settings (@  AVILA_EXTENSION) but there wasn't a 
> configuration program.  Nothing seems to write to location 
> AVILA_EXTENSION.  I looked through the BSP 0.6 docs and could not find 
> anything that indicated that the EEProm was being used for anything 
> other than storing the MAC addresses for the ethernet ports.  It seems 
> odd to me to use it for anything else in RedBoot when 
> CYGHWR_REDBOOT_FLASH_CONFIG_MEDIA_FLASH is defined.  With that define 
> on, I imagined that the "redboot config" partition would be used for 
> everything else.  I thus decided to use the rest of the eeprom for other 
> things.  RedBoot didn't seem to care and I had no idea the 
> AVILA_EXTENSION even existed since everything seemed to work fine.
> 
> My first question is: Will the Avila work properly with the defaults 
> used when AVILA_EXTENSION is not set in the EEProm under BSP 0.6?
> 
> I see that I am going to run into issues with the 0.7 BSP's redboot. 
> Before I implement any kind of workarounds, can you folks indicate what 
> your intentions are going forward with using the EEProm?  Are you going 
> to stick to the range indicated in the EEProm map pdf (0x100 to 0x13F) 
> or should I assume that Gateworks might use any part of the EEProm in 
> the future?
> 
> -Dave Acker
> 
> 
> _______________________________________________
> Avila mailing list
> Avila at lists.gateworks.com
> http://lists.gateworks.com/cgi-bin/mailman/listinfo/avila
>