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C6748 Silicon Revision 2.1 adds MMC/SD Boot Mode

jc-ti
Mastermind 27585 points

C6748 revision 2.1 has been released, and booting from MMC and SD devices is now supported.

See the updated Bootloader Application Report for details on the various features and modes supported.

In addition, a wiki has been created to compare boot times among the various boot modes supported on revision 2.1: Boot Benchmarks

If you have any questions, feel free to ask below and we will do our best to respond. Thanks!

 

  • Expert 2585 points

    The updated Bootloader Application documents says the 2.1 revision fixes silicon advisory 2.0.20.  However the C6748 errata document doesn't have 2.0.20 listed.  Is the C6748 errata document out of date?  Can you provide more information on errata 2.0.20?

    Thank you for clarifiying what boot modes use L2 memory, and which don't.  Also you added the note about the bootloader leaving L1P and L1D as 100% cache, and thus no initialized code/data should be loaded there.  These clarifications really help.

    I see you also added the warning about enabling module 8 in PSC1 via the AISGen tool.  It appears the new AISGen tools also throws a warning if you attempt to enable module 8.  This is all good stuff, and should really cut down on the frustration for new users.

    Thanks, Dean

  • in reply to Dean Hofstetter
    TI__Mastermind 27585 points

    Thanks for the feedback Dean.

    You are correct silicon advisory 2.0.20 doesn't apply to C6748. We will remove that notice from the document.

    Jeff

  • TI__Mastermind 30120 points

    Hi Jeff,

     

    jc-ti said:

    C6748 revision 2.1 has been released, and booting from MMC and SD devices is now supported.

    See the updated Bootloader Application Report for details on the various features and modes supported.

    should the card be formated in FAT32? Or there are no dependency on the way the card is formatted?
    As of now there does not seem to be information about this in SPRAAT2E section 6.5.

    Thanks and best regards,

    Anthony

  • in reply to AnBer
    TI__Mastermind 27585 points

    No the image must be on a raw unformatted partition. You could set aside the first 2MB of the card for the boot image and create a separate FAT32 partition for your file system if needed.

    Jeff