[U-Boot-Users] Support for AMD Flash SecSi Sector

[Wolfgang Denk]

In message <200401301120.32569.josef.baumgartner at telex.de> you wrote:
> 
> we use an AMD 29LV640D flash on our MCF5272 board. This flash has a 128 Word 
> sector called SecSi which is one time programmable. We'd like to use the 
> SecSi sector of the flash to store board information, as serial number and 
> ethernet MAC address.

Note that srial number and MAC address are already standard  concepts
in  U-Boot (envrionment variables "serial#" and "ethaddr"); also, you
may need more than one MAC address per board.

> I'll start to implement support for the SecSi sector in u-boot. Is there 
> anybody, still working on this topic? Are there any suggestions how to 
> implement it?

Please implement it ina way that  is  compatible  with  the  existent
code,  i.  e.  make  it fit with the existing "serial#" and "ethaddr"
variables.

> I think of adding some special commands in cmd_flash.c to read and prog the
> SecSi sector. Additionally I would change the read function for the "ethaddr" 
> to use the SeCsi sector instead of the environment.

I think this has some potential to break  existing  code.  Please  be
careful.

Best regards,

Wolfgang Denk

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