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OMAP L137: generating compatible boot images for different silicon revisions?

T.Baria
Prodigy 30 points

Hello,

We have boards with silicon rev 1.x of the OMAP L137, but now also some with revision 2.0. And we noticed that boot images created with AISgen for D800K001 (Rev 1.x) won't run on the new silicon. And vice versa as well. Images created with AISgen for D800K003 (Rev 2.0) won't run on the older silicon.

Is there any way to create a boot image that will run without changes on both silicon revisions?

Thanks!

  • 0
    TI__Guru 62975 points

    Which bootmode are you using?  The D800K003 boot ROM should be backward compatible with D800K001 except for some known bug fixes.

    -Tommy

  • 0
    Prodigy 15 points

    Hello,

     

    We also tried to use AISgen D800K001 for Rev 2.0 for getting the same image as for Rev 1.x  and did not succeed at first. After unchecking

     

    • Enable CRC  and
    • Enable Compression

     

    in the AISgen D800K001 GUI it was possible to generate a boot image which runs also with revision 2.0 .

     

    At the moment, we do not understand why this seems to be a workaround - investigation is ongoing.

     

    Rupert

  • 0 in reply to Rupert Grünzinger
    TI__Genius 17355 points

    Rupert,

    The compression option is not supported on D800K003 ROM boot loader (this should have been documented somewhere - I'll check into that). That could be the cause of your issue.  The CRC capabilities of both ROM revisions should be the same and we are not currently aware of any issues in that regard.

    Regards, Daniel