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