2 * (C) Copyright 2007 Michal Simek
4 * Michal SIMEK <monstr@monstr.eu>
6 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 #include <asm/microblaze_timer.h>
27 #include <asm/microblaze_intc.h>
29 volatile int timestamp = 0;
31 #ifdef CONFIG_SYS_TIMER_0
32 ulong get_timer (ulong base)
34 return (timestamp - base);
37 ulong get_timer (ulong base)
39 return (timestamp++ - base);
43 #ifdef CONFIG_SYS_INTC_0
44 #ifdef CONFIG_SYS_TIMER_0
45 microblaze_timer_t *tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR);
47 void timer_isr (void *arg)
50 tmr->control = tmr->control | TIMER_INTERRUPT;
55 tmr->loadreg = CONFIG_SYS_TIMER_0_PRELOAD;
56 tmr->control = TIMER_INTERRUPT | TIMER_RESET;
58 TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT;
60 install_interrupt_handler (CONFIG_SYS_TIMER_0_IRQ, timer_isr, (void *)tmr);
67 * This function is derived from PowerPC code (read timebase as long long).
68 * On Microblaze it just returns the timer value.
70 unsigned long long get_ticks(void)
76 * This function is derived from PowerPC code (timebase clock frequency).
77 * On Microblaze it returns the number of timer ticks per second.