[U-Boot-Users] [PATCH] Update OMAP242x for git head (plus sign).

[Wolfgang Denk]

Dear Tolunay,

in message <433C658F.8010209 at orkun.us> you wrote:
> 
> OK. Probably an on/off knob for user is enough. I think board designer 
> needs a bit more help in setting a policy for his/her board.

Just make sure you don't get into the way of your users.

"UNIX was not designed to stop you from doing stupid things,  because
that would also stop you from doing clever things."       - Doug Gwyn

> Would you consider something like CFG_FLASH_PROTECT_LIST in board config 
> file which defines an array of blocks that needs to be kept protected? 
> This would be a list similar to CFG_FLASH_BANKS_LIST. This would take 
> care of important sections of flash (beyond u-boot and environment) that 
> needs to be protected for that particular board.

Just to make sure I understand your intentions:  such  marked  blocks
would  be handled in exactly the same way as the areas which are used
to store U-Boot and the environment, i.  e.  they  are  protected  by
default after each reset, but can be unprotected by the user?

I see that such an extension would be useful  for  example  to  store
FPGA images which might be vital to get the board running at all, and
similar things.

Yes, I would  consider  such  an  extension,  but  then  it  must  be
generally  available,  i.  e.  for all flash types. I understand that
probably the cfi_flash driver would be  the  first  to  support  this
feature, but maybe the code can be made generic enough that it can be
called  by  custom flash drivers as well so all boards can use it (if
they like), and we can use the same method for protecting U-Boot  and
it's environment sectors?

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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