RNG: Rewrite RNG driver.

brabo commented 8 years ago

https://github.com/insane-adding-machines/libopencm3/commit/6c0fa767776174e6e6fa54a1c7a24acdfcfb2055 introduces clean functions to (en|dis)able the RNG and to read from it, allowing the driver code to be agnostic about registers and be more clean.

brabo commented 8 years ago

Expanded unicore-mx rng support to use convenience functions. Refactored rng driver and added f2 support to frosted. Need to handle errors correctly still.

danielinux commented 8 years ago

What is still missing in the current implementation:

[ ] Activate interrupt before the calling process suspends upon BUSY/underseed states
[ ] Implement ISR to trigger task_resume() and disable IRQ again
[ ] Implement a poll function that returns 1 if rng can be read (just check the flags..) or 0 if busy/underseed

If you want to implement #55 perhaps it's worth keeping both mechanism in place, so /dev/random can be attached to either the RNG directly or to libfortuna, depending whether CONFIG_LIBFORTUNA is enabled.

danielinux commented 8 years ago

@brabo : fixed via fortuna branch.

closing.

insane-adding-machines / frosted

RNG: Rewrite RNG driver. #50