1 /* -*-C++-*- $NetBSD: mips_tx39.h,v 1.4 2008/04/28 20:23:20 martin 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 UCHIYAMA Yasushi. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <hpcboot.h> 33 #include <mips/mips_arch.h> 34 35 class TX39XX : public MIPSArchitecture { 36 private: 37 38 public: 39 TX39XX(Console *&, MemoryManager *&, enum ArchitectureOps); 40 ~TX39XX(void); 41 42 virtual BOOL init(void); 43 virtual void systemInfo(void); 44 virtual void cacheFlush(void); 45 static void boot_func(struct BootArgs *, struct PageTag *); 46 }; 47 48 #define MIPS_TX39XX_CACHE_FLUSH() \ 49 __asm( \ 50 ".set noreorder;" \ 51 "li t1, 16384;" \ 52 "li t2, 8192;" \ 53 \ 54 /* Disable I-cache */ \ 55 "li t5, ~0x00000020;" \ 56 "mfc0 t6, $3;" \ 57 "and t5, t5, t6;" \ 58 "nop;" \ 59 "mtc0 t5, $3;" \ 60 \ 61 /* Stop streaming */ \ 62 "beq zero, zero, 1f;" \ 63 "nop;" \ 64 "1:" \ 65 /* Flush I-cache */ \ 66 "li t0, 0x80000000;" \ 67 "addu t1, t0, t1;" \ 68 "subu t1, t1, 128;" \ 69 "2:" \ 70 "cache 0x0, 0($0);" \ 71 "cache 0x0, 16(t0);" \ 72 "cache 0x0, 32(t0);" \ 73 "cache 0x0, 48(t0);" \ 74 "cache 0x0, 64(t0);" \ 75 "cache 0x0, 80(t0);" \ 76 "cache 0x0, 96(t0);" \ 77 "cache 0x0, 112(t0);" \ 78 "bne t0, t1, 2b;" \ 79 "addu t0, t0, 128;" \ 80 \ 81 /* Flush D-cache */ \ 82 "li t0, 0x80000000;" \ 83 "addu t1, t0, t2;" \ 84 \ 85 "3:" \ 86 "lw t2, 0(t0);" \ 87 "bne t1, t0, 3b;" \ 88 "addiu t0, t0, 4;" \ 89 \ 90 /* Enable I-cache */ \ 91 "nop;" \ 92 "mtc0 t6, $3;" \ 93 "nop;" \ 94 ".set reorder;" \ 95 ) 96