67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
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/**************************************************************************
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*
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* BRIEF MODULE DESCRIPTION
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* nvram definitions.
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*
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* Copyright 2004 IDT Inc. (rischelp@idt.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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**************************************************************************
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* May 2004 rkt, neb
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*
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* Initial Release
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*
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*
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*
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**************************************************************************
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*/
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#ifndef _NVRAM_
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#define _NVRAM_
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#define NVOFFSET 0 /* use all of NVRAM */
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/* Offsets to reserved locations */
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/* size description */
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#define NVOFF_MAGIC (NVOFFSET + 0) /* 2 magic value */
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#define NVOFF_CSUM (NVOFFSET + 2) /* 2 NVRAM environment checksum */
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#define NVOFF_ENVSIZE (NVOFFSET + 4) /* 2 size of 'environment' */
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#define NVOFF_TEST (NVOFFSET + 5) /* 1 cold start test byte */
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#define NVOFF_ETHADDR (NVOFFSET + 6) /* 6 decoded ethernet address */
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#define NVOFF_UNUSED (NVOFFSET + 12) /* 0 current end of table */
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#define NV_MAGIC 0xdeaf /* nvram magic number */
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#define NV_RESERVED 6 /* number of reserved bytes */
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#undef NVOFF_ETHADDR
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#define NVOFF_ETHADDR (NVOFFSET + NV_RESERVED - 6)
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/* number of bytes available for environment */
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#define ENV_BASE (NVOFFSET + NV_RESERVED)
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#define ENV_TOP 0x2000
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#define ENV_AVAIL (ENV_TOP - ENV_BASE)
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#endif /* _NVRAM_ */
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