git.sur5r.net Git - u-boot/blob - arch/arm/mach-highbank/timer.c

   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 }