[U-Boot-Users] Multiple flash Support
Wolfgang Denk
wd at denx.de
Thu Aug 24 11:40:57 CEST 2006
In message <000e01c6c752$e8502510$654765d5 at atmel.com> you wrote:
>
> Maybe this is too late,
> but it may make sense to add an 8 kB serial EEPROM to a board
> (which is probably a development board anyway)
> and store the environment in this chip.
No! Please DON'T do this.
I recommend against using EEPROM (at least on I2C) for any important
data. See doc/I2C_Edge_Conditions for just one problem which can
cause data loss on such devices. Don't say this is a theoretical
issue. I know of systems that suffered from this.
Also, EEPROM is slow to read, and adds for LONG and random boot
delays.
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
"This isn't brain surgery; it's just television." - David Letterman
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