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Diffstat (limited to 'firmware/target/arm/pnx0101/kernel-pnx0101.c')
-rw-r--r--firmware/target/arm/pnx0101/kernel-pnx0101.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/firmware/target/arm/pnx0101/kernel-pnx0101.c b/firmware/target/arm/pnx0101/kernel-pnx0101.c
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+++ b/firmware/target/arm/pnx0101/kernel-pnx0101.c
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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2007 by Tomasz Malesinski
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21#include "config.h"
22#include "system.h"
23#include "kernel.h"
24
25void timer_handler(void)
26{
27 /* Run through the list of tick tasks */
28 call_tick_tasks();
29
30 TIMER0.clr = 0;
31}
32
33void tick_start(unsigned int interval_in_ms)
34{
35 TIMER0.ctrl &= ~0x80; /* Disable the counter */
36 TIMER0.ctrl |= 0x40; /* Reload after counting down to zero */
37 TIMER0.load = 3000000 * interval_in_ms / 1000;
38 TIMER0.ctrl &= ~0xc; /* No prescaler */
39 TIMER0.clr = 1; /* Clear the interrupt request */
40
41 irq_set_int_handler(IRQ_TIMER0, timer_handler);
42 irq_enable_int(IRQ_TIMER0);
43
44 TIMER0.ctrl |= 0x80; /* Enable the counter */
45}