[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>
3 files changed
tree: 539b0105300cec6d854b83694ddea91b5e4abb1b
  1. .github/
  2. contrib/
  3. src/
  4. COPYING
  5. COPYING.GPLv2
  6. COPYING.UBDL
  7. README