common/env_nowhere.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   6  * Andreas Heppel <aheppel@sysgo.de>
   7
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28
  29 #if defined(CFG_ENV_IS_NOWHERE) /* Environment is nowhere */
  30
  31 #include <command.h>
  32 #include <environment.h>
  33 #include <linux/stddef.h>
  34 #include <malloc.h>
  35
  36 env_t *env_ptr = NULL;
  37
  38 extern uchar default_environment[];
  39 extern int default_environment_size;
  40
  41
  42 void env_relocate_spec (void)
  43 {
  44 }
  45
  46 uchar env_get_char_spec (int index)
  47 {
  48         DECLARE_GLOBAL_DATA_PTR;
  49
  50         return ( *((uchar *)(gd->env_addr + index)) );
  51 }
  52
  53 /************************************************************************
  54  * Initialize Environment use
  55  *
  56  * We are still running from ROM, so data use is limited
  57  */
  58 int  env_init(void)
  59 {
  60         DECLARE_GLOBAL_DATA_PTR;
  61
  62         gd->env_addr  = (ulong)&default_environment[0];
  63         gd->env_valid = 0;
  64
  65         return (0);
  66 }
  67
  68 #endif /* CFG_ENV_IS_NOWHERE) */