#1164 NORM BTest-4: Revise flash command to use new EC commands

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#1164: Revise flash command to use new EC commands
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  Reporter:  wmb at firmworks.com    |       Owner:  wmb at firmworks.com
      Type:  defect               |      Status:  closed           
  Priority:  normal               |   Milestone:  BTest-4          
 Component:  ofw - open firmware  |     Version:                   
Resolution:  invalid              |    Keywords:                   
  Verified:  0                    |  
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Changes (by wmb at firmworks.com):

  * status:  new => closed
  * verified:  => 0
  * resolution:  => invalid

Comment:

 The packaged EC commands for restarting after reflashing have never worked
 properly, and I think I know why.  The fundamental conundrum is that,
 after you have reflashed the EC code, the EC's 8051 microcontroller is not
 running, so it cannot respond to port 6c style commands.  You can hard-
 restart the EC by doing indexed I/O to internal device register ff14 via
 ports 381-383, because that is handled by hardwired logic and doesn't
 involve executing 8051 instructions.  But you can't run port 66 or port 6c
 commands because they are handled by code running on the 8051.

 With the current behavior of the EC code, the OFW use of the EC commands
 is correct.  We may want to revise the EC code to reset itself without
 powering off the system, in the context of secure updates.  For now, I am
 closing this bug, because it is invalid in the context of the current EC
 code.

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Ticket URL: <http://dev.laptop.org/ticket/1164#comment:2>
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