#9457 BLOC Not Tri: XO-1.5 OS30 boot scripts are quite right

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#9457: XO-1.5 OS30 boot scripts are quite right
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           Reporter:  wad      |       Owner:  dsaxena      
               Type:  defect   |      Status:  new          
           Priority:  blocker  |   Milestone:  Not Triaged  
          Component:  kernel   |     Version:  not specified
         Resolution:           |    Keywords:               
        Next_action:  design   |    Verified:  0            
Deployment_affected:           |   Blockedby:               
           Blocking:           |  
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Comment(by dsaxena):

 Replying to [comment:1 pgf]:
 >
 > optimally, we should lock down the numbers to the slots.  having the
 numbers change for fixed interfaces is a bug, not a feature.

 The number does not correspond to the interface, but the virtual block
 device. In the case of both internal and external, the internal is being
 scanned and found first, so it MMC block device 0 and the external is
 device 1. If no internal device, then the external block device is the
 only one in the system and is being assigned 0. Not a bug from that
 perspective, but not the most user-friendly either. Changing this code so
 that block device numbering is tied to board interface scan order is
 likely non-trivial.

 > barring that, perhaps olpc.fth can calculate the right device name,
 based on where olpc.fth itself is running from?

 You will also have to check if there's an internal card or not. Another
 option, is to use "root=UUID:<ID>", where the ID is the ext file system ID
 stored in the filesystem superblock (which OFW should have access to).
 This option may depend on having udev running at the right time so it can
 map the UUID to the right device, but not 100% sure.

-- 
Ticket URL: <http://dev.laptop.org/ticket/9457#comment:2>
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