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wdenk983fda82004-10-28 00:09:35 +00001/*
2 * (C) Copyright -2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2001
6 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27/*
28 * interrupts.c - just enough support for the decrementer/timer
29 */
30
31#include <common.h>
32#include <asm/processor.h>
33#include <command.h>
34
35int interrupt_init_cpu (ulong * decrementer_count)
36{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020037 *decrementer_count = get_tbclk () / CONFIG_SYS_HZ;
wdenk983fda82004-10-28 00:09:35 +000038
39 return (0);
40}
41
42/****************************************************************************/
43
44/*
45 * Handle external interrupts
46 */
47void external_interrupt (struct pt_regs *regs)
48{
49 puts ("external_interrupt (oops!)\n");
50}
51
52void timer_interrupt_cpu (struct pt_regs *regs)
53{
54 /* nothing to do here */
55 return;
56}
57
58/****************************************************************************/
59
60/*
61 * Install and free a interrupt handler.
62 */
63
64void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
65{
66
67}
68
69void irq_free_handler (int vec)
70{
71
72}
73
74/****************************************************************************/
75
76void
77do_irqinfo (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
78{
79 puts ("IRQ related functions are unimplemented currently.\n");
80}