1 /* 2 * Copyright 2010-2011 Calxeda, Inc. 3 * 4 * Based on arm926ejs/mx27/timer.c 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <asm/io.h> 11 #include <asm/arch-armv7/systimer.h> 12 13 #undef SYSTIMER_BASE 14 #define SYSTIMER_BASE 0xFFF34000 /* Timer 0 and 1 base */ 15 16 static struct systimer *systimer_base = (struct systimer *)SYSTIMER_BASE; 17 18 /* 19 * Start the timer 20 */ 21 int timer_init(void) 22 { 23 /* 24 * Setup timer0 25 */ 26 writel(0, &systimer_base->timer0control); 27 writel(SYSTIMER_RELOAD, &systimer_base->timer0load); 28 writel(SYSTIMER_RELOAD, &systimer_base->timer0value); 29 writel(SYSTIMER_EN | SYSTIMER_32BIT | SYSTIMER_PRESC_256, 30 &systimer_base->timer0control); 31 32 return 0; 33 34 } 35