Article ID: 000080200 Content Type: Troubleshooting Last Reviewed: 01/01/2015

Why does the preloader cause a kernel panic while booting from FPGA (when CONFIG_PRELOADER_EXE_ON_FPGA == 1)?

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    When the preloader is configured to boot from FPGA (CONFIG_PRELOADER_EXE_ON_FPGA == 1), the preloader will skip the bridge configuration and not pass the bridge configuration information to U-boot.

    Resolution

    To resolve this in U-boot, call the following command before calling “run bridge_enable_handoff”:

    setenv l3remap_handoff 0x19


    As an example, the text of the U-boot commands (before U-boot header is added) can be the following:

    fatload mmc 0:1 soc_system.rbf;
    fpga load 0 ;
    setenv l3remap_handoff 0x19
    run bridge_enable_handoff;
    run mmcload;
    run mmcboot;

    For more information regarding creating u-boot.scr files, please see the rocketboards documentation page.

    Related Products

    This article applies to 5 products

    Arria® V ST SoC FPGA
    Arria® V SX SoC FPGA
    Cyclone® V SX SoC FPGA
    Cyclone® V SE SoC FPGA
    Cyclone® V ST SoC FPGA

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