blob: 4936c628abe06a8e00759020b797a80cf8100dd6 [file] [log] [blame]
Michal Simek76316a32007-03-11 13:42:58 +01001/*
2 * (C) Copyright 2007 Michal Simek
3 *
4 * Michal SIMEK <monstr@monstr.eu>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
26#include <asm/microblaze_timer.h>
Michal Simek42efed62007-05-07 17:22:25 +020027#include <asm/microblaze_intc.h>
Michal Simek76316a32007-03-11 13:42:58 +010028
29volatile int timestamp = 0;
30
31void reset_timer (void)
32{
33 timestamp = 0;
34}
35
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020036#ifdef CONFIG_SYS_TIMER_0
Michal Simek76316a32007-03-11 13:42:58 +010037ulong get_timer (ulong base)
38{
39 return (timestamp - base);
40}
Michal Simek1c1100d2007-09-24 00:21:19 +020041#else
42ulong get_timer (ulong base)
43{
44 return (timestamp++ - base);
45}
46#endif
Michal Simek76316a32007-03-11 13:42:58 +010047
48void set_timer (ulong t)
49{
50 timestamp = t;
51}
52
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020053#ifdef CONFIG_SYS_INTC_0
54#ifdef CONFIG_SYS_TIMER_0
55microblaze_timer_t *tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR);
Michal Simek76316a32007-03-11 13:42:58 +010056
57void timer_isr (void *arg)
58{
59 timestamp++;
60 tmr->control = tmr->control | TIMER_INTERRUPT;
61}
62
Michal Simek5bbcb6c2010-04-16 11:37:41 +020063int timer_init (void)
Michal Simek76316a32007-03-11 13:42:58 +010064{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020065 tmr->loadreg = CONFIG_SYS_TIMER_0_PRELOAD;
Michal Simek76316a32007-03-11 13:42:58 +010066 tmr->control = TIMER_INTERRUPT | TIMER_RESET;
67 tmr->control =
68 TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT;
69 reset_timer ();
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020070 install_interrupt_handler (CONFIG_SYS_TIMER_0_IRQ, timer_isr, (void *)tmr);
Michal Simek5bbcb6c2010-04-16 11:37:41 +020071 return 0;
Michal Simek76316a32007-03-11 13:42:58 +010072}
73#endif
74#endif