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MM-ATH's avatar
MM-ATH
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

Agilex 5 - HPS first - u-boot stuck if rebooting

Hello, I have problem after reboot of my system (reboot in linux console or press HPSrst button on AXE5-Eagle devboard), or if I fit fpgacore.rbf from u-boot twice, than boot from emmc stuck on: ...
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tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
10 months ago

Hi


It seems like you would need to disable the F2H bridge in the Quartus Design too.

This is the current workaround and there is not fix currently as it is a silicon issue.


Regards

Jingyang, Teh



  • MM-ATH's avatar
    MM-ATH
    Icon for Occasional Contributor rankOccasional Contributor
    10 months ago

    Hello,

    we set FPGA to HPS subordinate to "Unused" in HPS Platform designer and behavior was same (that particular design was able to programm from linux as well as from u-boot).

    We disabled interrupts and removed (unconnected) F2H components from connection matrix then and problem persists (this particular design can be programmed only from u-boot - please see AGILEX5 - HPS-first - timeout waiting for RECONFIG_COMPLETED ). If I reprogramm core.rbf more times, tipically second time LEDs driven from FPGA are not blinking, third reprogramm are blinking etc. I tried to boot to linux once with this core.rbf when leds was blinking and everything worked (it was maybe 5x reprogrammed core.rbf). But other time it hung when my linux application tried to use HPS2FPGA bridge (maybe after 3x times of reprogramm).

    I have modified u-boot script and linux dtb to use hps2fpga bridge only in linux runtime, so I can boot to linux without programmed core.rbf.

    Can we do something more? I am using Quartus 24.3.1 Build102 01/14/2025 with no patches.

    Regards,

    Martin