[U-Boot] U-Boot environment update in linux embedded ARM architecture

[Jan Misfatto]

Dear Madam/Sir,
our company, Microhard s.r.l, produces data acquisition terminals and in 
our new design, which is under development, we use an ARM 9 plattform 
based on the AT91SAM9263 microcontroller. Right now our system uses a 
NAND Flash chip from Micron MT29F2G08AACWP and out Memory is mapped as 
follows

0x0 AT91Booststrap
0x20000 *U-Boot (2009.06)*
0x60000 *U-Boot Env.*
0x A0000 Linux Kernel
0x400000 Rooot FS (jffs2)

We are trying to update the U-booot environment from U-boot with the 
/"savenev"/ command. We encounter the following problem. When updating 
the u-boot environment part of the u-boot code is overwritten with the 
environment parameters. This happens only when our NAND flash has bad 
blocks in the u-boot zone. (Block 1 and 2), We receive the information 
about the  bad blocks from Sam-ba.  If we use a NAND  with no bad blocks 
everything works fine.
Could you kindly give any advise about this topic?
We looking foreword for your answer thank you for your time,
best regards

Jan Misfatto
-- 

*/Jan Misfatto/*

*/Microhard/**/ S.r.l./*
*Tel: +39.0331.514420*
*Fax: +39.0331.514707*
*e-mail:* *<jan.misfatto at microhard.biz>*

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 


/Questo messaggio ed i suoi allegati viene spedito solo alle persone 
indicate come destinatarie. Esso contiene informazioni confidenziali 
legalmente privilegiate. Se il lettore non e' indicato come 
destinatario, la lettura, diffusione o copia di questo messaggio o l'uso 
delle informazioni che contiene o degli allegati e' proibita. Se avete 
ricevuto questo messaggio per errore Vi preghiamo di avvisare 
immediatamente il mittente e cancellare il messaggio e gli allegati. Per 
qualunque domanda in proposito Vi preghiamo di contattarci inviando un 
messaggio a /_info at microhard.biz <mailto:info at microhard.biz>_/./

/This message and its attachments is addressed only to the intended 
recipient. This message contains confidential information legally 
privileged. If the reader is not a representative of the intended 
recipient, any review, dissemination or copying of this message or use 
of the information it contains or its attachments is prohibited. If you 
have received this message in error please notify immediately the sender 
and delete this message and attachments. Should you have any questions, 
please contact us by replying to /_info at microhard.biz__ 
<mailto:info at microhard.biz>_/./