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AM263P4-Q1: Maximum SBL Size?

Skyler Baumer
Prodigy 20 points

Part Number: AM263P4-Q1

Hello,

Is there a maximum SBL size for the AM263P MCU? I can see that the mcu_rom_image_gen.py script sets the maximum sbl size to 983000, but I would like to know if that's a software limitation or if there is something in the hardware that prevents a larger SBL from being loaded to an HS-FS device.

Thanks,

Skyler

  • +1
    Mastermind 9930 points

    As far as I know, there's not a hardware limit for the size of the SBL in OCRAM as long as it's loaded at the right address. However, the larger you make the SBL, the less memory you have available for Application code so it's in your interests to keep it as small as possible. SBL OCRAM can only be recovered for use as data memory by the Application.

  • +1 in reply to Kier
    TI__Guru* 91151 points

    Adding to the above,

    the size of the SBL is restricted because of the below redundant boot location in flash for ROM. If you are using this feature, then the SBL size should be less that the next redundant boot address.