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
  35 env_t *env_ptr = NULL;
  36
  37 extern uchar default_environment[];
  38 extern int default_environment_size;
  39
  40
  41 void env_relocate_spec (void)
  42 {
  43 }
  44
  45 uchar env_get_char_spec (int index)
  46 {
  47         DECLARE_GLOBAL_DATA_PTR;
  48
  49         return ( *((uchar *)(gd->env_addr + index)) );
  50 }
  51
  52 /************************************************************************
  53  * Initialize Environment use
  54  *
  55  * We are still running from ROM, so data use is limited
  56  */
  57 int  env_init(void)
  58 {
  59         DECLARE_GLOBAL_DATA_PTR;
  60
  61         gd->env_addr  = (ulong)&default_environment[0];
  62         gd->env_valid = 0;
  63
  64         return (0);
  65 }
  66
  67 #endif /* CFG_ENV_IS_NOWHERE) */