#10991 NORM 1.75-fi: XO-1.75 A3 boot panic, no filesystem could mount root, tried: ext3 ext2 ext4 cramfs vfat msdos

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#10991: XO-1.75 A3 boot panic, no filesystem could mount root, tried: ext3 ext2
ext4 cramfs vfat msdos
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           Reporter:  martin.langhoff  |       Owner:  Quozl        
               Type:  defect           |      Status:  assigned     
           Priority:  normal           |   Milestone:  1.75-firmware
          Component:  hardware         |     Version:  1.75-A3      
         Resolution:                   |    Keywords:               
        Next_action:  never set        |    Verified:  0            
Deployment_affected:                   |   Blockedby:               
           Blocking:                   |  
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Comment(by martin.langhoff):

 After further investigation, this looks very likely to be related to our
 fuse issues, where some of the SoCs on A3 boards were set erroneously to
 ARMv6. ARMv6 has a different cache coherency model, and the MMC layer
 issue got tracked down to a cache coherency issue.

 OFW Q3A13 overrides the settings and forces the SoC to operate in ARMv7
 mode -- Q3A14 and later do not, so we need to test if Q3A13 + OS15 boot
 correctly on the affected boards (13, 17 and 40).

-- 
Ticket URL: <http://dev.laptop.org/ticket/10991#comment:23>
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