Confirm UEFI Enablement - UG1523

To determine whether UEFI is enabled, you can use devlink to get the current configuration. See Confirm Current Configuration.

If devlink is not available, you can instead use lspci running as root:

# lspci -d 10ee: -v

• If UEFI is enabled then a line is output for the Expansion ROM:

  01:00.0 Ethernet controller: Xilinx Corporation Device 5084
          Subsystem: Xilinx Corporation Device 000b
          Flags: bus master, fast devsel, latency 0
          Memory at 2fffd00000 (64-bit, prefetchable) [size=1M]
          Memory at 2fffe01000 (64-bit, prefetchable) [size=4K]
          Expansion ROM at 3000000000 [disabled] [size=1M]
          Capabilities: ...

  Note: Its address might differ from the above example.
• If UEFI is not enabled there is no output for the Expansion ROM:

  01:00.0 Ethernet controller: Xilinx Corporation Device 5084
          Subsystem: Xilinx Corporation Device 000b
          Flags: bus master, fast devsel, latency 0
          Memory at 2fffd00000 (64-bit, prefetchable) [size=1M]
          Memory at 2fffe01000 (64-bit, prefetchable) [size=4K]
          Capabilities: ...