LXR coreboot-v3/arch/x86/udelay

   1/*
   2 * This file is part of the coreboot project.
   3 *
   4 * Copyright (C) 2005 coresystems GmbH
   5 * (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; version 2 of the License.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  19 */
  20
  21#include <io.h>
  22
  23void udelay(unsigned int usecs)
  24{
  25        unsigned int i;
  26        for (i = 0; i < usecs; i++)
  27                outb(i & 0xff, 0x80);
  28}
  29