CVS commit: src/sys/arch/mips/cavium

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Wed May 13 21:09:02 UTC 2020

Modified Files:
        src/sys/arch/mips/cavium: octeonvar.h
        src/sys/arch/mips/cavium/dev: octeon_rnm.c octeon_rnmreg.h

Log Message:
Rework octeon_rnm(4) random number generator driver.

- Do a little on-line self-test for fun.
- Draw raw samples from the ring oscillators.
- Draw substantially more samples:
  => early RO samples seem to have considerably lower entropy
  => consecutive RO samples are not independent
- Make sure to use rnd_add_data_sync in the callback.
  => not technically needed in HEAD, but would be needed for pullup


To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/mips/cavium/octeonvar.h
cvs rdiff -u -r1.4 -r1.5 src/sys/arch/mips/cavium/dev/octeon_rnm.c
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/mips/cavium/dev/octeon_rnmreg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.