efuseppkbits - Unknown option on command line

Hi,

I am trying to generate the SHA to write to the eFuse so I can properly activate the secure boot authentication
However using the documented bif file, I am having the following issue:

all:
{
        [pskfile] keys/PSK.pem
        [sskfile] keys/SSK.pem
        [bootloader, destination_cpu=a53-0, authentication=rsa] u-boot-spl.bin
}

./bootgen –arch zynqmp –image bif.hash -o boot.bin –efuseppkbits eFUSE.txt

****** Xilinx Bootgen v2021.1
  **** Build date : Jul 15 2021-00:18:02
    ** Copyright 1986-2021 Xilinx, Inc. All Rights Reserved.

[ERROR]  : Unknown option on command line:

It is not straightforward to debug the parser (lex/bixon stuff).
Could you help me understand the error in the command line please - verbatim from the documentation?

This actually relates to https://github.com/Xilinx/bootgen/pull/10

Reproduce the documented bootgen command with bif.hash and the shown efuseppkbits option, then inspect the command-line parser, including the lex/bison parts named in the report, to trace why it is rejected. Done means the documented invocation is accepted and produces the expected eFUSE.txt output for the secure-boot workflow.