/* * Copyright (c) 2007 * Nobuhiro Iwamatsu <iwamatsu@nigauri.org> * * See file CREDITS for list of people who contributed to this * project. * * 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; either version 2 of * the License, or (at your option) any later version. * * 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., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <asm/processor.h> static void tmu_timer_start (unsigned int timer) { if (timer > 2) return; *((volatile unsigned char *) TSTR0) |= (1 << timer); } int timer_init (void) { *(volatile u16 *)TCR0 = 0; tmu_timer_start (0); return 0; } unsigned long long get_ticks (void) { return (0 - *((volatile unsigned int *) TCNT0)); } unsigned long get_timer (unsigned long base) { return ((0 - *((volatile unsigned int *) TCNT0)) - base); } void set_timer (unsigned long t) { *((volatile unsigned int *) TCNT0) = (0 - t); } void reset_timer (void) { set_timer (0); } void udelay (unsigned long usec) { unsigned int start = get_timer (0); unsigned int end = start + (usec * ((CFG_HZ + 500000) / 1000000)); while (get_timer (0) < end) continue; } unsigned long get_tbclk (void) { return CFG_HZ; }