[LinuxBIOS] #26: flashrom: Support for PIIX4/PIIX4E/PIIX4M

[LinuxBIOS]

#26: flashrom: Support for PIIX4/PIIX4E/PIIX4M
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     Reporter:  uwe          |          Owner:  uwe       
         Type:  enhancement  |         Status:  assigned  
     Priority:  major        |      Milestone:            
    Component:  flashrom     |        Version:  v2        
   Resolution:               |       Keywords:            
Include_gantt:  0            |   Dependencies:            
   Due_assign:  MM/DD/YYYY   |      Due_close:  MM/DD/YYYY
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Comment (by uwe):

 Replying to [comment:2 rsmith]:
 > Replying to [comment:1 stepan]:
 >
 > > Also, FFF80000-FFFDFFFF is not enough. You need to enable the range
 from FFFE0000-FFFFFFFF as well.
 >
 > As pointed out you should just enable the full 1-Meg space.  Several of
 those settings are jsut for the legacy alias into the lower 1 Meg of
 address space.  Since we don't have that legacy baggage you can just
 eanble the entire upper 1 Meg (0xfff00000- 0xffffffff).  And let flashrom
 mmap it.

 I have now enabled all three relevant bits, which should result in all of
 the upper meg (I hope). It's tested from cold boot, I can detect, read,
 and write multiple 256K chips. I'll attach an updated patch.

-- 
Ticket URL: <http://tracker.linuxbios.org/trac/LinuxBIOS/ticket/26#comment:5>
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