#9435 NORM Not Tri: OFW has 256 char limit on boot paramerters

[Zarro Boogs per Child]

#9435: OFW has 256 char limit on boot paramerters
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 Reporter:  rsmith               |                 Owner:  wmb at firmworks.com
     Type:  defect               |                Status:  new              
 Priority:  normal               |             Milestone:  Not Triaged      
Component:  ofw - open firmware  |               Version:  not specified    
 Keywords:                       |           Next_action:  never set        
 Verified:  0                    |   Deployment_affected:                   
Blockedby:                       |              Blocking:                   
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 Attempting to add the boot option "acpi.debug_level=7" to the list of
 options in boot-file breaks the boot.

 An observation was that this addition makes the boot-file string longer
 than 256 characters.

 Increasing the buffer length of boot-file from 256 to 512 does not solve
 the problem.  A study of the boot processing code reveals that there is a
 hard limit of 255 on the strings processed.

 We either need to figure out how to shorten our kernel boot options line
 or increase the limit in OFW

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Ticket URL: <http://dev.laptop.org/ticket/9435>
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