tsseccparameters man page

eccparameters

Runs TPM2_ECC_Parameters

-cv curve ID

bnp256 nistp256 nistp384

[-of data file, ECC parameters]

The full documentation for tsseccparameters is maintained as a Texinfo manual.  If the info and tsseccparameters programs are properly installed at your site, the command

info tsseccparameters

should give you access to the complete manual.