/* $NetBSD: enable.h,v 1.3 2013/09/06 17:43:19 tsutsui 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. * * 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
