[Trac #1330] Firmware reflash should check battery and AC status

[Zarro Boogs per Child]

#1330: Firmware reflash should check  battery and AC status
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 Reporter:  wmb at firmworks.com    |        Owner:  rsmith 
     Type:  enhancement          |       Status:  new    
 Priority:  normal               |    Milestone:  BTest-4
Component:  ofw - open firmware  |   Resolution:         
 Keywords:                       |  
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Comment (by rsmith):

 Replying to [comment:1 gnu]:

 > So reflashingwill beimpossible on ahuman poweredlaptop?   Perhaps check
 for one ortheother -- battery or ac.

 I would say yes.  A laptop with outdated firmware is far more useful than
 a brick.  Remember that on production machines there will be no recovery
 method from a failed firmware update.  If the full physical security on
 the spi flash goes into place an EC firmware failure essentially turns the
 board into trash.

 If you are going to up date firmware in the field you need 2 power
 sources.  In places where there is no grid then a 2nd source of constant
 power will needs to be required.

 I suppose we can add in a manual override for the few cases where it will
 be necessary but for the automatic update case (99.9%) 2 power sources
 need to be present.

 You could also further divide this into 2 different types of firmware
 update. One that touches the EC code and one that updates OFW.  OFW is
 planned to have a fallback scheme so powerfails in that procedure will be
 ok.  Its an EC code update that is terminal.

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Ticket URL: <http://dev.laptop.org/ticket/1330#comment:2>
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