ev64260_locore.S revision 1.1
1 /* $NetBSD: ev64260_locore.S,v 1.1 2003/03/05 22:08:26 matt Exp $ */ 2 /* $OpenBSD: locore.S,v 1.4 1997/01/26 09:06:38 rahnds Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 6 * Copyright (C) 1995, 1996 TooLs GmbH. 7 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by TooLs GmbH. 20 * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include "opt_ddb.h" 36 #include "fs_kernfs.h" 37 #include "opt_ppcparam.h" 38 #include "opt_ipkdb.h" 39 #include "opt_multiprocessor.h" 40 #include "opt_openpic.h" 41 #include "assym.h" 42 43 #include <sys/syscall.h> 44 45 #include <machine/param.h> 46 #include <machine/vmparam.h> 47 #include <machine/pmap.h> 48 #include <machine/psl.h> 49 #include <machine/trap.h> 50 #include <machine/asm.h> 51 52 #include <powerpc/spr.h> 53 #include <powerpc/oea/hid.h> 54 55 /* 56 * Some instructions gas doesn't understand (yet?) 57 */ 58 #define bdneq bdnzf 2, 59 60 /* 61 * Globals 62 */ 63 GLOBAL(startsym) 64 .long 0 /* start symbol table */ 65 GLOBAL(endsym) 66 .long 0 /* end symbol table */ 67 GLOBAL(proc0paddr) 68 .long 0 /* proc0 p_addr */ 69 70 /* 71 * File-scope for locore.S 72 */ 73 #ifdef DINK 74 .data 75 dink_return: 76 .long 0 /* fake uarea during idle after exit */ 77 dink_stack: 78 .long 0 /* fake uarea during idle after exit */ 79 #endif 80 81 /* 82 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 83 * mark the start of kernel text. 84 */ 85 .text 86 .globl _C_LABEL(kernel_text) 87 _C_LABEL(kernel_text): 88 89 /* 90 * Startup entry. Note, this must be the first thing in the text 91 * segment! 92 */ 93 .text 94 .globl __start 95 __start: 96 #ifdef DINK 97 mflr 0 98 lis 8, dink_stack@ha 99 stw 1, dink_stack@l(8) 100 lis 8, dink_return@ha 101 stw 0, dink_return@l(8) 102 #endif 103 104 #if 0 105 eieio; sync 106 lis 8, 0xf100f104@ha 107 lwz 7, -3836(8) 108 li 0, 1 109 andc 7,7,0 110 stw 7, -3836(8) 111 eieio; sync 112 #endif 113 114 li 0,0 115 mtmsr 0 /* Disable FPU/MMU/exceptions */ 116 sync ; isync 117 118 /* Enable data and instruction caches */ 119 mfspr 8,SPR_HID0 120 ori 8, 8, (HID0_ICE | HID0_DCE)@l 121 mtspr SPR_HID0,8 122 123 /* compute end of kernel memory */ 124 lis 8,_C_LABEL(end)@ha 125 addi 8,8,_C_LABEL(end)@l 126 #if defined(DDB) || defined(KERNFS) 127 lis 7,_C_LABEL(startsym)@ha 128 addi 7,7,_C_LABEL(startsym)@l 129 stw 3,0(7) 130 lis 7,_C_LABEL(endsym)@ha 131 addi 7,7,_C_LABEL(endsym)@l 132 stw 4,0(7) 133 /* mr 8,4 * end of symbol table */ 134 #endif 135 mr 4,8 /* end of mem reserved for kernel */ 136 INIT_CPUINFO(4,1,9,0) 137 138 lis 3,__start@ha 139 addi 3,3,__start@l 140 141 li 5,0 142 li 6,0 143 144 bl _C_LABEL(initppc) 145 bl _C_LABEL(main) 146 147 loop: b loop /* XXX not reached */ 148 149 #if 0 150 .globl _C_LABEL(extintr_enable) 151 _C_LABEL(extintr_enable): 152 mfmsr 3 153 ori 3,3,PSL_EE@l 154 sync 155 mtmsr 3 156 blr 157 158 .globl _C_LABEL(extintr_restore) 159 _C_LABEL(extintr_restore): 160 mfmsr 4 161 or 3,4,3 162 sync 163 mtmsr 3 164 blr 165 166 .globl _C_LABEL(extintr_disable) 167 _C_LABEL(extintr_disable): 168 mfmsr 3 169 andi. 4,3,~PSL_EE@l 170 sync 171 mtmsr 4 172 andi. 3,3,PSL_EE@l 173 blr 174 175 .globl _C_LABEL(mvpppc_reboot) 176 _C_LABEL(mvpppc_reboot): 177 mfmsr 3 178 ori 3,3,PSL_IP@l 179 sync 180 mtmsr 3 181 b 0xFFF00100 182 #endif 183 184 #ifdef DINK 185 .globl _C_LABEL(return_to_dink) 186 _C_LABEL(return_to_dink): 187 sync 188 lis 4, dink_stack@ha 189 lwz 1, dink_stack@l(4) 190 lis 4, dink_return@ha 191 lwz 5, dink_return@l(4) 192 mtlr 5 193 blr 194 #endif 195 196 /* 197 * Include common switch / setfault code 198 */ 199 #include <powerpc/powerpc/locore_subr.S> 200 201 /* 202 * Include common trap / execption code 203 */ 204 #include <powerpc/powerpc/trap_subr.S> 205
Indexes created Sun Oct 12 05:10:08 GMT 2025