A corrupted ROM has to be followed by a system restore, either manual or
automatic, depending on the level of intelligence you want to build into
the hardware. I have seen scenarios where restore partition is in an
unwritable location and there is a ROM in some safe location whose sole
purpose is to restore from the protected partition.
[mailto:firstname.lastname@example.org] On Behalf Of Ronald G Minnich
Sent: Thursday, March 23, 2006 10:38 AM
To: Lu, Yinghai
Cc: jg(a)laptop.org; LinuxBIOS
Subject: Re: [LinuxBIOS] [Fwd: Hardware Write-Protect for BIOS & EC]
Lu, Yinghai wrote:
1. in you suggestion. When you are flash the rom, if
sth go wrong
(lose power), you will corrupt your rom.
2. are you going to use fallback image with normal image?
If so you can disable the write to last 128K ( fallback image part)
via HW jumper. ---- No one could change the fallback image without
remove the jumper. Some MB already have that for last 64k.
I think that having a 'you can never write this' bios image would be
useful. The power fail scenario is a concern.
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