NetBSD/sys/arch/sun3x/include/enable.h

69 lines
3.3 KiB
C

/* $NetBSD: enable.h,v 1.1.1.1 1997/01/14 20:57:07 gwr Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jeremy Cooper.
*
* 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
* notice, this list of conditions and the following disclaimer.
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* System Enable Register
* The Sun3x System Enable Register controls the function of a few
* on-board devices and general system operation. It is cleared when
* the system is reset.
*
* 15 0
* +---+---+---+---+---+---+---+---+---+---+---+---+---+---.---.---+
* |BT |FPP|DMA| 0 |VID|RES|FPA|DIA| 0 |CCH|IOC|LBK|DCH| UNUSED |
* +---+---+---+---+---+---+---+---+---+---+---+---+---+---.---.---+
*
*
* Bits in the Enable Register defined.
*/
#define ENA_DBGCACHE 0x0008 /* Debug mode for system cache */
#define ENA_LOOPBACK 0x0010 /* VME loopback mode */
#define ENA_IOCACHE 0x0020 /* Enable I/O cache */
#define ENA_CACHE 0x0040 /* Enable system cache */
#define ENA_DIAG 0x0100 /* Diagnostic switch */
#define ENA_FPA 0x0200 /* Enable floating point acc. */
#define ENA_RES 0x0400 /* Video display resolution (0 => hi, 1 => low) */
#define ENA_VIDEO 0x0800 /* Enable video display */
#define ENA_SDVMA 0x2000 /* Enable system DVMA */
#define ENA_FPP 0x4000 /* Enable floating point coprocessor */
#define ENA_NOTBOOT 0x8000 /* Non-boot state (0 => boot, 1 => normal) */
#ifdef _KERNEL
extern volatile short *enable_reg;
#endif