1129198Scognet/* $NetBSD: cpufunc_asm_armv4.S,v 1.1 2001/11/10 23:14:09 thorpej Exp $ */ 2129198Scognet 3139735Simp/*- 4129198Scognet * Copyright (c) 2001 ARM Limited 5129198Scognet * Copyright (c) 1997,1998 Mark Brinicombe. 6129198Scognet * Copyright (c) 1997 Causality Limited 7129198Scognet * All rights reserved. 8129198Scognet * 9129198Scognet * Redistribution and use in source and binary forms, with or without 10129198Scognet * modification, are permitted provided that the following conditions 11129198Scognet * are met: 12129198Scognet * 1. Redistributions of source code must retain the above copyright 13129198Scognet * notice, this list of conditions and the following disclaimer. 14129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 15129198Scognet * notice, this list of conditions and the following disclaimer in the 16129198Scognet * documentation and/or other materials provided with the distribution. 17129198Scognet * 3. All advertising materials mentioning features or use of this software 18129198Scognet * must display the following acknowledgement: 19129198Scognet * This product includes software developed by Causality Limited. 20129198Scognet * 4. The name of Causality Limited may not be used to endorse or promote 21129198Scognet * products derived from this software without specific prior written 22129198Scognet * permission. 23129198Scognet * 24129198Scognet * THIS SOFTWARE IS PROVIDED BY CAUSALITY LIMITED ``AS IS'' AND ANY EXPRESS 25129198Scognet * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26129198Scognet * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 27129198Scognet * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED BE LIABLE FOR ANY DIRECT, 28129198Scognet * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29129198Scognet * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30129198Scognet * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34129198Scognet * SUCH DAMAGE. 35129198Scognet * 36129198Scognet * ARM9 assembly functions for CPU / MMU / TLB specific operations 37129198Scognet * 38129198Scognet */ 39236991Simp 40129198Scognet#include <machine/asm.h> 41129198Scognet__FBSDID("$FreeBSD$"); 42129198Scognet 43129198Scognet/* 44129198Scognet * TLB functions 45129198Scognet */ 46129198ScognetENTRY(armv4_tlb_flushID) 47129198Scognet mcr p15, 0, r0, c8, c7, 0 /* flush I+D tlb */ 48137463Scognet RET 49248361SandrewEND(armv4_tlb_flushID) 50129198Scognet 51129198ScognetENTRY(armv4_tlb_flushD) 52129198Scognet mcr p15, 0, r0, c8, c6, 0 /* flush D tlb */ 53137463Scognet RET 54248361SandrewEND(armv4_tlb_flushD) 55129198Scognet 56129198ScognetENTRY(armv4_tlb_flushD_SE) 57129198Scognet mcr p15, 0, r0, c8, c6, 1 /* flush D tlb single entry */ 58137463Scognet RET 59248361SandrewEND(armv4_tlb_flushD_SE) 60129198Scognet 61129198Scognet/* 62129198Scognet * Other functions 63129198Scognet */ 64129198ScognetENTRY(armv4_drain_writebuf) 65129198Scognet mcr p15, 0, r0, c7, c10, 4 /* drain write buffer */ 66137463Scognet RET 67248361SandrewEND(armv4_drain_writebuf) 68248361Sandrew 69262420SianENTRY(armv4_idcache_inv_all) 70262420Sian mov r0, #0 71262420Sian mcr p15, 0, r0, c7, c7, 0 /* invalidate all I+D cache */ 72262420Sian RET 73262420SianEND(armv4_drain_writebuf) 74262420Sian 75