/* * This file is part of the coreboot project. * * Copyright (C) 2009 Samsung Electronics * * 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; version 2 of the License. * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <console/console.h> #include <timer.h> #include <delay.h> #include "clk.h" void init_timer(void) { /* Nothing to do because we manually * call mct_start() in the bootblock */ } /* delay x useconds */ void udelay(unsigned usec) { struct mono_time current, end; timer_monotonic_get(¤t); end = current; mono_time_add_usecs(&end, usec); if (mono_time_after(¤t, &end)) { printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n", usec); /* There's not much we can do if usec is too big. Use a long, * paranoid delay value and hope for the best... */ end = current; mono_time_add_usecs(&end, USECS_PER_SEC); } while (mono_time_before(¤t, &end)) timer_monotonic_get(¤t); }