LXR uboot/cpu/ppc4xx/commproc.c

   1/*
   2 * (C) Copyright 2000-2004
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   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 * Atapted for ppc4XX by Denis Peter
  25 */
  26
  27#include <common.h>
  28#include <commproc.h>
  29#include <asm/io.h>
  30
  31#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  32
  33#if defined(CONFIG_SYS_POST_WORD_ADDR)
  34# define _POST_ADDR     ((CONFIG_SYS_OCM_DATA_ADDR) + (CONFIG_SYS_POST_WORD_ADDR))
  35#elif defined(CONFIG_SYS_POST_ALT_WORD_ADDR)
  36# define _POST_ADDR     (CONFIG_SYS_POST_ALT_WORD_ADDR)
  37#endif
  38
  39void post_word_store (ulong a)
  40{
  41        volatile void *save_addr = (volatile void *)(_POST_ADDR);
  42
  43        out_be32(save_addr, a);
  44}
  45
  46ulong post_word_load (void)
  47{
  48        volatile void *save_addr = (volatile void *)(_POST_ADDR);
  49
  50        return in_be32(save_addr);
  51}
  52
  53#endif  /* CONFIG_POST || CONFIG_LOGBUFFER*/
  54
  55#ifdef CONFIG_BOOTCOUNT_LIMIT
  56
  57void bootcount_store (ulong a)
  58{
  59        volatile ulong *save_addr =
  60                (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
  61
  62        save_addr[0] = a;
  63        save_addr[1] = BOOTCOUNT_MAGIC;
  64}
  65
  66ulong bootcount_load (void)
  67{
  68        volatile ulong *save_addr =
  69                (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
  70
  71        if (save_addr[1] != BOOTCOUNT_MAGIC)
  72                return 0;
  73        else
  74                return save_addr[0];
  75}
  76
  77#endif /* CONFIG_BOOTCOUNT_LIMIT */
  78