xref: /src/sys/arch/acorn32/doc/bootoptions

/* $NetBSD: bootoptions,v 1.1 2001/10/18 00:05:01 reinoud Exp $ */

/*
 * Copyright (c) 1996 Mark Brinicombe.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Mark Brinicombe.
 * 4. The name of the company nor the name of the author may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 *
 * RiscBSD kernel project
 *
 * bootoptions
 *
 * Description of all available boot options
 *
 * Created      : 02/10/96
 * Updated	: 20/02/01
 */

This file describes all the boot options available.

RiscPC Boot options

 Options for all kernels

  nocache	Disable all processor caches
  nowritebuf	Disable processor write buffer
  fpaclk2	Clock FPA at half processor clock speed
  single	Single user mode
  kdb		KDB
  maxproc=	Specify the maximum in-core processes (L1 page tables)
  ramdisc=	Specify ramdisc size in KB
  nbuf=		Specify the number of buffers
  nowdreset	Skip the wd driver drive reset command
  ascpoll	Use polling mode rather than interrupt mode for the asc
		driver
  nbuf=		Specify the number of buffers to use.

 Options for StrongARM kernels

  icache	Enable instruction cache
  dcache	Enable data cache

 Special debugging options not for normal use

  pmapdebug=	Specify pmap debug level
  termdebug	Enable console debugging
  notermcls	Console debugging option

RC7500 Boot options

 -s		Single user mode
 -a		Prompt for root device
 -k		KDB
 -m		video memory size