target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.h

   1 /**************************************************************************
   2  *
   3  *  BRIEF MODULE DESCRIPTION
   4  *     nvram definitions.
   5  *
   6  *  Copyright 2004 IDT Inc. (rischelp@idt.com)
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  *
  28  *
  29  **************************************************************************
  30  * May 2004 rkt, neb
  31  *
  32  * Initial Release
  33  *
  34  *
  35  *
  36  **************************************************************************
  37  */
  38
  39
  40 #ifndef _NVRAM_
  41 #define _NVRAM_
  42 #define NVOFFSET        0                 /* use all of NVRAM */
  43
  44 /* Offsets to reserved locations */
  45               /* size description */
  46 #define NVOFF_MAGIC     (NVOFFSET + 0)    /* 2 magic value */
  47 #define NVOFF_CSUM      (NVOFFSET + 2)    /* 2 NVRAM environment checksum */
  48 #define NVOFF_ENVSIZE   (NVOFFSET + 4)    /* 2 size of 'environment' */
  49 #define NVOFF_TEST      (NVOFFSET + 5)    /* 1 cold start test byte */
  50 #define NVOFF_ETHADDR   (NVOFFSET + 6)    /* 6 decoded ethernet address */
  51 #define NVOFF_UNUSED    (NVOFFSET + 12)   /* 0 current end of table */
  52
  53 #define NV_MAGIC        0xdeaf            /* nvram magic number */
  54 #define NV_RESERVED     6                 /* number of reserved bytes */
  55
  56 #undef  NVOFF_ETHADDR
  57 #define NVOFF_ETHADDR   (NVOFFSET + NV_RESERVED - 6)
  58
  59 /* number of bytes available for environment */
  60 #define ENV_BASE        (NVOFFSET + NV_RESERVED)
  61 #define ENV_TOP         0x2000
  62 #define ENV_AVAIL       (ENV_TOP - ENV_BASE)
  63
  64 #endif /* _NVRAM_ */
  65
  66