| /* | |
| * (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> | |
| #ifndef CONFIG_USE_IRQ | |
| 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 = CFG_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); | |
| } | |
| #endif /* #ifndef CONFIG_USE_IRQ */ |