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.
thanks, d.
-----Original Message----- From: linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] On Behalf Of Ronald G Minnich Sent: Thursday, March 23, 2006 10:38 AM To: Lu, Yinghai Cc: jg@laptop.org; LinuxBIOS Subject: Re: [LinuxBIOS] [Fwd: Hardware Write-Protect for BIOS & EC]
Lu, Yinghai wrote:
- 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.
ron
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