Aaeon UP Xtreme i11 Getting Started Manual page 21

This is desirable, because often you wish to start at early SEC or PEI to debug the
portion of UEFI of interest. You'll also need to halt at the reset vector in order to set up
Architectural Event Trace (covered later in this document).
But, the v0001 board has an incomplete implementation of DbC2, as you can see from
the yellow ball reference earlier, so a couple of extra steps are needed to get there:
Firstly, after hitting the Reset button, an error message is thrown:
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SourcePoint Getting Started Guide – UP Xtreme i11