| Ingo van Lil | 3eb90ba | 2009-11-24 14:09:21 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2000-2009 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <watchdog.h> |
| 26 | |
| 27 | #ifndef CONFIG_WD_PERIOD |
| 28 | # define CONFIG_WD_PERIOD (10 * 1000 * 1000) /* 10 seconds default*/ |
| 29 | #endif |
| 30 | |
| 31 | /* ------------------------------------------------------------------------- */ |
| 32 | |
| 33 | void udelay(unsigned long usec) |
| 34 | { |
| 35 | ulong kv; |
| 36 | |
| 37 | do { |
| 38 | WATCHDOG_RESET(); |
| 39 | kv = usec > CONFIG_WD_PERIOD ? CONFIG_WD_PERIOD : usec; |
| 40 | __udelay (kv); |
| 41 | usec -= kv; |
| 42 | } while(usec); |
| 43 | } |