#11215 NORM 1.75-fi: XO-1.75 may brick OpenFirmware by power button press during flash

[Zarro Boogs per Child]

#11215: XO-1.75 may brick OpenFirmware by power button press during flash
-------------------------------------------+--------------------------------
           Reporter:  Quozl                |       Owner:  rsmith              
               Type:  defect               |      Status:  new                 
           Priority:  normal               |   Milestone:  1.75-firmware       
          Component:  embedded controller  |     Version:  Development firmware
         Resolution:                       |    Keywords:                      
        Next_action:  review               |    Verified:  0                   
Deployment_affected:                       |   Blockedby:                      
           Blocking:                       |  
-------------------------------------------+--------------------------------

Comment(by Quozl):

 Please explain further.  I don't see any way to put the EC into reset and
 keep it there.

  * EC_RST# (U20.36) is not connected, according to the schematic,

  * there's no command in sdicmd.c for putting the EC into reset that
 doesn't also let the EC restart again,

  * the reflash after reboot requires the EC to be running, since it uses
 0x4b CMD_POWER_CYCLE, so putting it into reset and keeping it there would
 prevent reboot, and this does not seem right.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11215#comment:2>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system