[Arm-netbook] identification EEPROM: writable or not?

Aaron J. Seigo aseigo at kde.org
Thu Nov 7 08:54:31 GMT 2013


On Wednesday, November 6, 2013 22:15:42 luke.leighton wrote:
>  correct.  hence the recommendation that under normal operation the
> EEPROM should be read-only (and user-applications *including* the
> bootloader *and* operating system should consider it normal that the
> EEPROM is read-only) **** BUT ***** that it is an OEM's decision to
> decide when the EEPROM is readable or writeable, and there will be a
> RECOMMENDATION that a factory-jumper or other mechanism entirely of
> the OEM's choosing to permit OS upgrades, developer modes and so on.
> 
>  an "engineering board" would probably ship by default in "developer
> mode" i.e. read-write EEPROM.  or just not have a read-only mode at
> all.  that is the *OEM*'s choice.

sounds spot on; your mention of the X25 spec is a good lesson to follow, 
indeed.

-- 
Aaron J. Seigo



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