1 /* $NetBSD: ibm_machdep.c,v 1.5 2002/05/02 14:58:37 nonaka Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by NONAKA Kimihiro. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_platform.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 44 #include <machine/bus.h> 45 #include <machine/platform.h> 46 47 static struct platform *platform_ibm[] = { 48 #if defined(PLATFORM_IBM_6050) 49 &platform_ibm_6050, 50 #endif 51 #if defined(PLATFORM_IBM_7248) 52 &platform_ibm_7248, 53 #endif 54 NULL 55 }; 56 57 struct plattab plattab_ibm = { 58 platform_ibm, sizeof(platform_ibm)/sizeof(platform_ibm[0]) - 1 59 }; 60 61 void 62 cpu_setup_ibm_generic(struct device *dev) 63 { 64 u_char l2ctrl, cpuinf; 65 66 /* system control register */ 67 l2ctrl = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x81c); 68 /* device status register */ 69 cpuinf = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x80c); 70 71 /* Enable L2 cache */ 72 *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x81c) = l2ctrl | 0xc0; 73 } 74