[OLPC-devel] Re: [One Laptop Per Child] #53: LinuxBIOS sometimes hangs after "Jumping to LinuxBIOS"

[Zarro Boogs per Child]

#53: LinuxBIOS sometimes hangs after "Jumping to LinuxBIOS"
-------------------------------+--------------------------------------------
 Reporter:  wmb at firmworks.com  |        Owner:  mfoster   
     Type:  defect             |       Status:  new       
 Priority:  blocker            |    Milestone:  rev1 alpha
Component:  linuxbios          |   Resolution:            
 Keywords:                     |  
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Comment (by jg):

 Replying to [comment:28 tsylla]:
 > jg reports the Hynix part number:
 >
 > HY5DU561622ETP-J
 >
 > That datasheet is here:
 >
 > http://www.hynix.com/datasheet/pdf/dram/HY5DU568(16)22E(L)TP(Rev1.1).pdf
 >
 > The Hynix part is ok, it is clearly rated for CAS2 at 266 or less:
 >
 >        - J 133MHz at CL2 166MHz at CL2.5 DDR333 (2.5-3-3)
 >


 This begs a question: do we need to have 2 versions of the BIOS, so that
 we get valid qual data on the CAS 2 based boards?  This sucks, but there
 seems little alternative to me under the circumstances. There is no way I
 know from hardware to figure out the RAM type; we sacrificed that for
 cost.

 We also need to warn people off installing LinuxBIOS on Infineon based
 boards for the time being, at least until we have a CAS 2.5 version of the
 LinuxBIOS to give them.  I'll go fix the wiki.

-- 
Ticket URL: <http://dev.laptop.org/ticket/53#comment:29>
One Laptop Per Child <http://laptop.org/>