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Andrewski's avatar
Andrewski
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5 years ago

Cyclone V SoC Lockup

Are there any known issues that can cause the Cyclone V SOC to lockup on power up? We have a product where we are experience random boot failures in the field where the SOC appears to fail to boot. ...
EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Can you briefly explain on what was the step of the booting order that you used for testing?

Also, which document are you referring to? I may need to look it up.

Andrewski's avatar
Andrewski
Icon for New Contributor rankNew Contributor
5 years ago

Hi,

  • We have a Cyclone V SOC device, 5CSEBA5U23I7SN
  • BSEL[2:0] = 111, The Boot Select pins are setup to boot from QSPI NOR and appear to be up and stable before POR. The HPS boots and then loads the FPGA.
  • MSEL[4:0} value of 01010, Fast Power On
  • We hold the HPS_nPOR signal low throughout the power up sequence and then an additional 100ms after the power up sequence. The clocks and power rails are stable by the point the HPS_nPOR signal is released.
  • Documents I'm referencing are the Cyclone V Hard Processor System Technical Reference Manual, Cyclone V Device Handbook.
  • Cyclone V Device Handbook indicates that you can power up the device in any order, and then gives you a table listing current transients at power on if you do not follow the recommended power up sequence.

  • EBERLAZARE_I_Intel's avatar
    EBERLAZARE_I_Intel
    Icon for Regular Contributor rankRegular Contributor
    5 years ago

    Hi,

    Can you provide the flash device part number that you use for booting?

    Also, it would be helpful if you could provide the boot logs that was failing.