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LP-AM243: Boot Process

Jan J
Prodigy 145 points
Part Number: LP-AM243

Hi experts,

I am using a LP-AM243 (E3) with MCU+SDK 08.05.00.24 looking at the boot process in TRM chapter 4.

For the SPI boot modes it is written, that there is a redundant image location where the file will be loaded from if the image read fails at 0x0.

What kind of check is performed on the image at 0x0? What does the image integrity check in figure 4-3 mean?

Thanks!

Best Regards,

Jan

  • 0
    TI__Guru 55315 points

    Hi Jan,

    Since you are using the LP(E3), the SoC on the LP is the HS-FS device. The ROM bootloader will check the signed SBL_NULL(OSPI) at flash location 0x0.

    In order to make bootloading process work properly, you will not only need the HS-FS version of the SBL_NULL or SBL_OSPI, but the signed appImage (HS-FS version)

    sbl_null.release.tiimage --> sbl_null.release.hs_fs.tiimage

    sbl_ospi.release.tiimage --> sbl_ospi.release.hs_fs.tiimage

    hello_world_am243x-evm_r5fss0-0_nortos_ti-arm-clang.appimage --> hello_world_am243x-evm_r5fss0-0_nortos_ti-arm-clang.appimage.hs_fs

    Best regards,

    Ming