LXR uboot/arch/sh/cpu/sh2/cpu.c

   1/*
   2 * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   3 * Copyright (C) 2008 Renesas Solutions Corp.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <command.h>
  26#include <asm/processor.h>
  27#include <asm/io.h>
  28
  29#define STBCR4      0xFFFE040C
  30#define cmt_clock_enable() do {\
  31                writeb(readb(STBCR4) & ~0x04, STBCR4);\
  32        } while (0)
  33#define scif0_enable() do {\
  34                writeb(readb(STBCR4) & ~0x80, STBCR4);\
  35        } while (0)
  36
  37int checkcpu(void)
  38{
  39#if defined(CONFIG_SH2A)
  40        puts("CPU: SH2A\n");
  41#else
  42        puts("CPU: SH2\n");
  43#endif
  44        return 0;
  45}
  46
  47int cpu_init(void)
  48{
  49        /* SCIF enable */
  50        scif0_enable();
  51        /* CMT clock enable */
  52        cmt_clock_enable() ;
  53        return 0;
  54}
  55
  56int cleanup_before_linux(void)
  57{
  58        disable_interrupts();
  59        return 0;
  60}
  61
  62int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  63{
  64        disable_interrupts();
  65        reset_cpu(0);
  66        return 0;
  67}
  68
  69void flush_cache(unsigned long addr, unsigned long size)
  70{
  71
  72}
  73
  74void icache_enable(void)
  75{
  76}
  77
  78void icache_disable(void)
  79{
  80}
  81
  82int icache_status(void)
  83{
  84        return 0;
  85}
  86
  87void dcache_enable(void)
  88{
  89}
  90
  91void dcache_disable(void)
  92{
  93}
  94
  95int dcache_status(void)
  96{
  97        return 0;
  98}
  99