tree 539b0105300cec6d854b83694ddea91b5e4abb1b
parent cd54e7c844e2148b46c960d72ed853f8f75bf400
author Michael Brown <mcb30@ipxe.org> 1730074218 +0000
committer Michael Brown <mcb30@ipxe.org> 1730130924 +0000

[riscv] Add support for the seed CSR as an entropy source

The Zkr entropy source extension defines a potentially unprivileged
seed CSR that can be read to obtain 16 bits of entropy input, with a
mandated requirement that 256 entropy input bits read from the seed
CSR will contain at least 128 bits of min-entropy.

Signed-off-by: Michael Brown <mcb30@ipxe.org>