#11089 HIGH 1.75-fi: XO-1.75 B1 brick due to efface-md failure to flash-open (after RTC power fail or sufficient elapsed time)

[Zarro Boogs per Child]

#11089: XO-1.75 B1 brick due to efface-md failure to flash-open (after RTC power
fail or sufficient elapsed time)
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           Reporter:  Quozl                |       Owner:  greenfeld    
               Type:  defect               |      Status:  closed       
           Priority:  high                 |   Milestone:  1.75-firmware
          Component:  ofw - open firmware  |     Version:  1.75-B1      
         Resolution:  fixed                |    Keywords:               
        Next_action:  no action            |    Verified:  0            
Deployment_affected:                       |   Blockedby:               
           Blocking:                       |  
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Changes (by Quozl):

  * status:  new => closed
  * next_action:  test in release => no action
  * resolution:  => fixed


Comment:

 Yes, the tag was not documented.  I've added an entry to the table now.
 I'm not sure the documentation is needed, as I think it is a tag that
 should not escape the manufacturing process.  There are other tags that
 are deleted before shipping.

 The tag is not required for proper operation.  There will have been no
 hint about refusing to boot, since the root cause was a defect in
 OpenFirmware.

 Yes, during the first boot that occurs at least ten days after the value
 in the md tag, OpenFirmware will change it.  The code that does that is
 between lines 1293 and 1302, see
 [http://tracker.coreboot.org/trac/openfirmware/browser/cpu/x86/pc/olpc/security.fth#L1302
 source].

 Yes, it is a bit dangerous, but it is necessary to provide a grace period
 for the manufacturer to avoid the deployment security system.

 I'm satisfied with the testing so far, so I'm closing this ticket.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11089#comment:9>
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