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      1 /* $NetBSD: bootoptions,v 1.1 2001/10/18 00:05:01 reinoud Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1996 Mark Brinicombe.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Mark Brinicombe.
     18  * 4. The name of the company nor the name of the author may be used to
     19  *    endorse or promote products derived from this software without specific
     20  *    prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  * RiscBSD kernel project
     35  *
     36  * bootoptions
     37  *
     38  * Description of all available boot options
     39  *
     40  * Created      : 02/10/96
     41  * Updated	: 20/02/01
     42  */
     43 
     44 This file describes all the boot options available.
     45 
     46 RiscPC Boot options
     47 
     48  Options for all kernels
     49 
     50   nocache	Disable all processor caches
     51   nowritebuf	Disable processor write buffer
     52   fpaclk2	Clock FPA at half processor clock speed
     53   single	Single user mode
     54   kdb		KDB
     55   maxproc=	Specify the maximum in-core processes (L1 page tables)
     56   ramdisc=	Specify ramdisc size in KB
     57   nbuf=		Specify the number of buffers
     58   nowdreset	Skip the wd driver drive reset command
     59   ascpoll	Use polling mode rather than interrupt mode for the asc
     60 		driver
     61   nbuf=		Specify the number of buffers to use.
     62 
     63  Options for StrongARM kernels
     64 
     65   icache	Enable instruction cache
     66   dcache	Enable data cache
     67 
     68  Special debugging options not for normal use
     69 
     70   pmapdebug=	Specify pmap debug level
     71   termdebug	Enable console debugging
     72   notermcls	Console debugging option
     73 
     74 RC7500 Boot options
     75 
     76  -s		Single user mode
     77  -a		Prompt for root device
     78  -k		KDB
     79  -m		video memory size
     80 
     81