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6747 nor flash boot

Calum Mackinnon
Genius 4155 points

I have a customer asking the following question

"We have a question about the 6747 DSP boot code size.  The bootloader appnote SPRAB04 shows that the boot code size is defined in the first 32 bits of boot code.  The table in the document shows only four boot code sizes, but the value seem like it could be any size from 1K-16K, like it’s missing a “…” below 2KB.  Is this so?"

Cheers

Calum

  • 0
    TI__Expert 8890 points

    Calum,

    Are you referring to Table 1?  If so, then you're correct; there appears to be a missing ellipsis; you can configure the boot size to be anywhere from 1-16 KB.  However, please note that this "boot size" argument only applies to one boot mode: NOR legacy.

    Most boot modes use AIS to step through the boot process, and AIS does not require you to explicitly specify the boot image size.  AIS boot images can also be larger than 16 KB.  Refer to Table 6 for the complete list of boot modes (including which modes use AIS).

    Hope this helps.