| wdenk | 5c952cf | 2004-10-10 21:27:30 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2003, Psyent Corporation <www.psyent.com> |
| 3 | * Scott McNutt <smcnutt@psyent.com> |
| 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 | |
| 28 | extern void dly_clks( unsigned long ticks ); |
| 29 | |
| 30 | void udelay(unsigned long usec) |
| 31 | { |
| 32 | /* The Nios core doesn't have a timebase, so we do our |
| 33 | * best for now and call a low-level loop that counts |
| 34 | * cpu clocks. |
| 35 | */ |
| 36 | unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec; |
| 37 | WATCHDOG_RESET (); /* trigger watchdog if needed */ |
| 38 | dly_clks (cnt); |
| 39 | } |