diff options
Diffstat (limited to 'cpu/ixp/timer.c')
| -rw-r--r-- | cpu/ixp/timer.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/cpu/ixp/timer.c b/cpu/ixp/timer.c deleted file mode 100644 index edf341f..0000000 --- a/cpu/ixp/timer.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * (C) Copyright 2006 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <asm/arch/ixp425.h> - -#ifdef CONFIG_TIMER_IRQ - -#define FREQ 66666666 -#define CLOCK_TICK_RATE (((FREQ / CONFIG_SYS_HZ & ~IXP425_OST_RELOAD_MASK) + 1) * CONFIG_SYS_HZ) -#define LATCH ((CLOCK_TICK_RATE + CONFIG_SYS_HZ/2) / CONFIG_SYS_HZ) /* For divider */ - -/* - * When interrupts are enabled, use timer 2 for time/delay generation... - */ - -static volatile ulong timestamp; - -static void timer_isr(void *data) -{ - unsigned int *pTime = (unsigned int *)data; - - (*pTime)++; - - /* - * Reset IRQ source - */ - *IXP425_OSST = IXP425_OSST_TIMER_2_PEND; -} - -ulong get_timer (ulong base) -{ - return timestamp - base; -} - -void reset_timer (void) -{ - timestamp = 0; -} - -int timer_init (void) -{ - /* install interrupt handler for timer */ - irq_install_handler(IXP425_TIMER_2_IRQ, timer_isr, (void *)×tamp); - - /* setup the Timer counter value */ - *IXP425_OSRT2 = (LATCH & ~IXP425_OST_RELOAD_MASK) | IXP425_OST_ENABLE; - - /* enable timer irq */ - *IXP425_ICMR = (1 << IXP425_TIMER_2_IRQ); - - return 0; -} -#else -ulong get_timer (ulong base) -{ - return get_timer_masked () - base; -} - -void ixp425_udelay(unsigned long usec) -{ - /* - * This function has a max usec, but since it is called from udelay - * we should not have to worry... be happy - */ - unsigned long usecs = CONFIG_SYS_HZ/1000000L & ~IXP425_OST_RELOAD_MASK; - - *IXP425_OSST = IXP425_OSST_TIMER_1_PEND; - usecs |= IXP425_OST_ONE_SHOT | IXP425_OST_ENABLE; - *IXP425_OSRT1 = usecs; - while (!(*IXP425_OSST & IXP425_OSST_TIMER_1_PEND)); -} - -void __udelay (unsigned long usec) -{ - while (usec--) ixp425_udelay(1); -} - -static ulong reload_constant = 0xfffffff0; - -void reset_timer_masked (void) -{ - ulong reload = reload_constant | IXP425_OST_ONE_SHOT | IXP425_OST_ENABLE; - - *IXP425_OSST = IXP425_OSST_TIMER_1_PEND; - *IXP425_OSRT1 = reload; -} - -ulong get_timer_masked (void) -{ - /* - * Note that it is possible for this to wrap! - * In this case we return max. - */ - ulong current = *IXP425_OST1; - if (*IXP425_OSST & IXP425_OSST_TIMER_1_PEND) - { - return reload_constant; - } - return (reload_constant - current); -} - -int timer_init(void) -{ - return 0; -} -#endif |