[coreboot] #104: flashrom: Change flash drivers to never erase data before writing

[coreboot]

#104: flashrom: Change flash drivers to never erase data before writing
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    Reporter:  stuge     |         Owner:  somebody         
        Type:  defect    |        Status:  new              
    Priority:  major     |     Milestone:  flashrom v1.0    
   Component:  flashrom  |       Version:                   
  Resolution:            |      Keywords:  erase write      
Dependencies:  #103      |   Patchstatus:  there is no patch
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Comment(by stepan):

 If this should become agreed upon, which I don't hope, I suggest that we
 at least check the area before writing, if the writing can theoretically
 succeed at all. ie. if all bytes are 0xff. And print a warning if they are
 not all ff. Plus print an error if those bits that we try to set to 1 are
 0.

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Ticket URL: <http://tracker.coreboot.org/trac/coreboot/ticket/104#comment:4>
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