Although Open Firmware supports it, there is no way from OpenBSD to
reboot with a specified boot command line, so drop vestigial support for
it from boot().
Index: sparc64/machdep.c
===
RCS file: /OpenBSD/src/sys/arch/sparc64/sparc64/
> Date: Fri, 3 Jan 2020 19:26:22 +
> From: Miod Vallat
>
> Although Open Firmware supports it, there is no way from OpenBSD to
> reboot with a specified boot command line, so drop vestigial support for
> it from boot().
Hmm, reboot(2) does allow us to pass flags. But you're right that
there