[Trac #1122] EC code, dead lock code at 0x75b9

Zarro Boogs per Child bugtracker at laptop.org
Tue Mar 20 23:42:53 EDT 2007

#1122: EC code, dead lock code at 0x75b9
 Reporter:  frief                        |        Owner:  David.Lin
     Type:  defect                       |       Status:  new      
 Priority:  normal                       |    Milestone:  Untriaged
Component:  embedded controller          |   Resolution:           
 Keywords:  EC watchdog brown out reset  |  
Changes (by David.Lin):

  * owner:  ray.tseng at quantatw.com => David.Lin


 mov     dptr,#GPIOED0   ; 75b2   90 fc 24   .|$
 movx    a, at dptr         ; 75b5   e0         `
 anl     a,#0feh         ; 75b6   54 fe      T~
 movx    @dptr,a         ; 75b8   f0         p

 In the firmware at address 75b2 to 75b8 are to control a output signel in
 low to make a hardware reset for EC.
 So the dead loop code is to wait an EC cold reset.
 Before performing these codes the charger was disabled to make sure no
 safety concern.

Ticket URL: <http://dev.laptop.org/ticket/1122#comment:1>
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