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

   1 /*
   2  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/io.h>
   9 #include <asm/arch/timer.h>
  10
  11 #define TIMER_LOAD_VAL          0xFFFFFFFF
  12
  13 static const struct socfpga_timer *timer_base = (void *)CONFIG_SYS_TIMERBASE;
  14
  15 /*
  16  * Timer initialization
  17  */
  18 int timer_init(void)
  19 {
  20         writel(TIMER_LOAD_VAL, &timer_base->load_val);
  21         writel(TIMER_LOAD_VAL, &timer_base->curr_val);
  22         writel(readl(&timer_base->ctrl) | 0x3, &timer_base->ctrl);
  23         return 0;
  24 }