common flash hw write enable methods
bari at onelabs.com
Sun Dec 1 23:16:01 CET 2002
Ronald G. Minnich wrote:
>On Sun, 1 Dec 2002, Andrew Kohlsmith wrote:
>>Now I know that every motherboard is different and that there may be other
>>things locking me out, but generally speaking is there an "industry standard"
>>way of enabling/disabling BIOS reflash?
>No, the goal is to make it hard for you to reflash. So the vendors keep
>coming up with new ways to hide this. Very annoying!
The two methods we use for the several motherboards we design a year to
enable/disable flash writes are:
Method A - Use a jumper.
Method B - Use whatever GPIO is leftover on chipset or Super I/O.
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