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