RTAS_FUNC_THAW_TIME_BASE
if (machine_has_rtas && rtas_has_func(RTAS_FUNC_THAW_TIME_BASE))
rtas_call(RTAS_FUNC_THAW_TIME_BASE, 0, 1, &junk);
{ "thaw-time-base", RTAS_FUNC_THAW_TIME_BASE },