[coreboot] cbfs XIP patch

[Carl-Daniel Hailfinger]

On 05.05.2009 19:36, ron minnich wrote:
> Isn't this somewhat mythical anyway? how many flash chips support
> 'erase byte' at this point (I honestly don't know!). I.e., isn't an
> update of any one byte in a block going to wipe out a whole block? How
> many cbfs files fit on neat 64k or 16k or whatever boundaries?
>   

Intel specifies that each flash chip location (byte) must be writable at
least twice after each erase, so you can update a previously written
byte once (well, set some more bits to 0) without erasing.

Regards,
Carl-Daniel

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