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Altera_Forum
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12 years ago

FPGA-to-HPS SDRAM Interface blocks whole HPS

Hello, I have configured in QSYS f2h_sdram0 as Avalon-MM Bidirectional with a width of 64 bits. Whatever I connect to this interface, blocks the HPS when I run "run bridge_enable_handoff" in ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

I just solved a similar issue. Try burning the sof file first before booting Linux. Once the FPGA is configured, press the WARM reset button to boot Linux. The preloader should automatically configure all the required HPS registers on bootup. From my experience, you cannot properly configure the HPS SDRAM controller registers while Linux is running. This has to be done by the preloader on bootup.

Hope this helps!