freebsd-dev/sys/boot/fdt
Mark Murray a1acc06f4f Random bit generator (RBG) driver for RPi and RPi2.
Summary:
This driver supports the following methods to trigger gathering random bits from the hardware:
1. interrupt when the FIFO is full (default) fed into the harvest queue
2. callout (when BCM2835_RNG_USE_CALLOUT is defined) every second if hz is less than 100, otherwise hz / 100, feeding the random bits into the harvest queue

If the kernel is booted with verbose enabled, the contents of the registers will be dumped after the RBG is started during the attach routine.

Author: hackagadget_gmail.com (Stephen J. Kiernan)

Test Plan: Built RPI2 kernel and booted on board. Tested the different methods to feed the harvest queue (callout, interrupt) and the interrupt driven approach seems best. However, keeping the other method for people to be able to experiment with.

Reviewed By: adrian, delphij, markm

Differential Revision: https://reviews.freebsd.org/D6888
2016-07-19 18:07:47 +00:00
..
dts Random bit generator (RBG) driver for RPi and RPi2. 2016-07-19 18:07:47 +00:00
fdt_loader_cmd.c Remove extra 0x before %p format strings introduced by r296182 2016-07-08 22:32:03 +00:00
fdt_overlay.c Add FDT overlays support to ubldr 2016-04-29 22:42:59 +00:00
fdt_overlay.h Add FDT overlays support to ubldr 2016-04-29 22:42:59 +00:00
fdt_platform.h Add FDT overlays support to ubldr 2016-04-29 22:42:59 +00:00
help.fdt Provide verbose help for fdt commands on platforms that use it. 2013-02-11 02:15:26 +00:00
Makefile Add FDT overlays support to ubldr 2016-04-29 22:42:59 +00:00
Makefile.depend META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00