arch/arm/cpu/s3c44b0/cpu.c

   1 /*
   2  * (C) Copyright 2004
   3  * DAVE Srl
   4  * http://www.dave-tech.it
   5  * http://www.wawnet.biz
   6  * mailto:info@wawnet.biz
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 /*
  12  * S3C44B0 CPU specific code
  13  */
  14
  15 #include <common.h>
  16 #include <command.h>
  17 #include <asm/hardware.h>
  18
  19 int arch_cpu_init (void)
  20 {
  21         icache_enable();
  22
  23         return 0;
  24 }
  25
  26 int cleanup_before_linux (void)
  27 {
  28         /*
  29                 cache memory should be enabled before calling
  30                 Linux to make the kernel uncompression faster
  31         */
  32         icache_enable();
  33
  34         disable_interrupts ();
  35
  36         return 0;
  37 }
  38
  39 void reset_cpu (ulong addr)
  40 {
  41         /*
  42                 reset the cpu using watchdog
  43         */
  44
  45         /* Disable the watchdog.*/
  46         WTCON&=~(1<<5);
  47
  48         /* set the timeout value to a short time... */
  49         WTCNT = 0x1;
  50
  51         /* Enable the watchdog. */
  52         WTCON|=1;
  53         WTCON|=(1<<5);
  54
  55         while(1) {
  56                 /*NOP*/
  57         }
  58 }