Hardware-specific tweaks and configuration

Systems with No RTC (real-time clock)#

Includes the Raspberry Pi family of SBC (single board computers).

1. Disable hwclock (if enabled; on the Raspberry Pi it has already been disabled).

   service hwclock stop
   rc-update hwclock disable boot

2. Enable swclock (only useful if /sbin/openrc-run is preserved across boots. For a system mode (classic) install this helps. For a diskless, data, or our hybrid install, it isn’t. Also note that for the Raspberry Pi it comes pre-enabled.

   rc-update swclock enable boot
   service swclock start

Low entropy systems#

Includes headless Raspberry Pi systems.

1. Add and enable RNG tools package

   • The Raspberry Pi has a hardware RNG
   • rng-tools includes the ‘jitter’ entropy source which is an improvement on ‘haveged’ so we recommend using rng-tools rather than the haveged package. (Thank you to Dermot Bradley for pointing this out).

   apk add rng-tools
   rc-update add rngd boot default
   service rngd start

Wireless#

TODO: Add kernel parameters required for wireless.

Kernel commandline or device-tree / config#

Guides for setting kernel parameters