1 /* $NetBSD: cpufeat.h,v 1.6 2021/02/26 21:15:20 thorpej Exp $ */ 2 /*- 3 * Copyright (c) 2008 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Tim Rightnour 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _POWERPC_OEA_OEAFEAT_H_ 32 33 /* 34 * Cpu features for OEA Cpus. 35 * These are only features that affect early bootstrap, and decisions 36 * that need to be made very early on, like what pmap to use, if bats are 37 * available, etc etc. More can be added later. Some are not yet utilized. 38 */ 39 40 /* 0 means, 32bit, has bats, not a 601, ie, the default 604 case */ 41 42 #define OEACPU_64 (1 << 0) 43 #define OEACPU_64_BRIDGE (1 << 1) 44 #define OEACPU_NOBAT (1 << 2) 45 #define OEACPU_HIGHBAT (1 << 3) 46 #define OEACPU_601 (1 << 4) 47 #define OEACPU_HIGHSPRG (1 << 5) 48 #define OEACPU_ALTIVEC (1 << 6) 49 #define OEACPU_XBSEN (1 << 7) /* BATS > 256MB */ 50 51 #ifdef _KERNEL 52 void cpu_features_probe(void); 53 void cpu_features_enable(void); 54 void cpu_model_init(void); 55 extern unsigned long oeacpufeat; 56 57 #define oea_mapiodev(addr, size) ((oeacpufeat & OEACPU_NOBAT) ? \ 58 mapiodev((paddr_t)(addr), (size), 0) : (void *)(addr)) 59 60 #endif 61 62 #endif /* _POWERPC_OEA_OEAFEAT_H_ */ 63