/* tick14.c * * Copyright (C) 1996 David Redman (djhr@tadpole.co.uk) * * This file handles the Sparc specific level14 ticker * This is really useful for profiling OBP uses it for keyboard * aborts and other stuff. */ #include <linux/kernel.h> extern unsigned long lvl14_save[5]; static unsigned long *linux_lvl14 = NULL; static unsigned long obp_lvl14[4]; /* * Call with timer IRQ closed. * First time we do it with disable_irq, later prom code uses spin_lock_irq(). */ void install_linux_ticker(void) { if (!linux_lvl14) return; linux_lvl14[0] = lvl14_save[0]; linux_lvl14[1] = lvl14_save[1]; linux_lvl14[2] = lvl14_save[2]; linux_lvl14[3] = lvl14_save[3]; } void install_obp_ticker(void) { if (!linux_lvl14) return; linux_lvl14[0] = obp_lvl14[0]; linux_lvl14[1] = obp_lvl14[1]; linux_lvl14[2] = obp_lvl14[2]; linux_lvl14[3] = obp_lvl14[3]; }