1/* 2 * (C) Copyright 2007 Michal Simek 3 * (C) Copyright 2004 Atmark Techno, Inc. 4 * 5 * Michal SIMEK <monstr@monstr.eu> 6 * Yasushi SHOJI <yashi@atmark-techno.com> 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27#include <common.h> 28 29#ifdef CONFIG_SYS_TIMER_0 30void __udelay (unsigned long usec) 31{ 32 int i; 33 i = get_timer (0); 34 while ((get_timer (0) - i) < (usec / 1000)) ; 35} 36#else 37void __udelay (unsigned long usec) 38{ 39 unsigned int i; 40 for (i = 0; i < (usec * CONFIG_XILINX_CLOCK_FREQ / 10000000); i++); 41} 42#endif 43