#12727 NORM Not Tri: OFW doesn't follow x86 linux boot protocol

Zarro Boogs per Child bugtracker at laptop.org
Fri Jul 12 22:14:07 EDT 2013

#12727: OFW doesn't follow x86 linux boot protocol
           Reporter:  dsd                  |       Owner:  Quozl        
               Type:  defect               |      Status:  new          
           Priority:  normal               |   Milestone:  Not Triaged  
          Component:  ofw - open firmware  |     Version:  not specified
         Resolution:                       |    Keywords:               
        Next_action:  communicate          |    Verified:  0            
Deployment_affected:                       |   Blockedby:               
           Blocking:                       |  
Changes (by Quozl):

  * next_action:  never set => communicate


 Please test with crank:~quozl/q3c16ja.rom which:
  * clears the sentinel byte at 0x1ef, and
  * reports whether the sentinel clearing is needed or not, based on the
 kernel header version number being greater than 0x020b, per 09c205a,

 Trying last:\boot\bootfw1.zip
   FW found - current FW is up-to-date
 Trying last:\boot\runos1.zip
   OS found - kernel header version number check, sentinel wiping is
 Trying last:\boot\runrd1.zip
   RD found - [    0.000000] Initializing cgroup subsys cpu

 q3c16ja is q3c16 plus [http://dev.laptop.org/~quozl/z/1UxpF8.txt this

 code16-size reads the byte at 0x1f1 in the loaded kernel image, adds one,
 and multiplies by 512.  This is setup_sects, the size of the setup in

 I tried to build a kernel here, but the olpc-3.10 branch asked me many
 config questions that I had no answers for, after copying xo_1.5_defconfig
 to .config.  If q3c16ja doesn't fix it, could you provide a test kernel?
 What is the symptom of the failure?  Presumably missing /proc/device-tree
 and related symptoms.

Ticket URL: <http://dev.laptop.org/ticket/12727#comment:1>
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