3 * Copyright (C) 1996 David Redman (djhr@tadpole.co.uk)
5 * This file handles the Sparc specific level14 ticker
6 * This is really useful for profiling OBP uses it for keyboard
7 * aborts and other stuff.
9 #include <linux/kernel.h>
11 extern unsigned long lvl14_save[5];
12 static unsigned long *linux_lvl14 = NULL;
13 static unsigned long obp_lvl14[4];
16 * Call with timer IRQ closed.
17 * First time we do it with disable_irq, later prom code uses spin_lock_irq().
19 void install_linux_ticker(void)
24 linux_lvl14[0] = lvl14_save[0];
25 linux_lvl14[1] = lvl14_save[1];
26 linux_lvl14[2] = lvl14_save[2];
27 linux_lvl14[3] = lvl14_save[3];
30 void install_obp_ticker(void)
35 linux_lvl14[0] = obp_lvl14[0];
36 linux_lvl14[1] = obp_lvl14[1];
37 linux_lvl14[2] = obp_lvl14[2];
38 linux_lvl14[3] = obp_lvl14[3];