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rshal2's avatar
rshal2
Icon for Occasional Contributor rankOccasional Contributor
7 years ago
Solved

When do we need to customize preloader?

Hello, The general scheme of building preloader is composed of: handoff -> preloader config + u-boot-spl source code -> binary So it is usually "automatic" build without any customization. Yet, ...
  • EBERLAZARE_I_Intel's avatar
    EBERLAZARE_I_Intel
    7 years ago

    Hi ranran,

    Here is an example; for enabling HPS-to-FPGA Bridges from the preloader, the preloader will check the status of the FPGA then automatically enables bridges that are configured in Qsys/platform designer (Standard) and the BSP if the FPGA is configured.

    For more information, I reckon you refer to GSRD v13.1 - Programming FPGA from HPS.

    Regards.

EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

If you decide to have some hardware changes in your design for example, then you will need to customize your preloader to include the hardware.

To enable bridges you can refer here page 10.

Regards.

  • rshal2's avatar
    rshal2
    Icon for Occasional Contributor rankOccasional Contributor
    7 years ago

    Thanks.

    I try to ask if enabling the bridge is done as part of generating the preload file, or does it require manually modifying the file before compilation ?

    Thank you very much,

    ranran