1/* $FreeBSD$ */ 2/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */ 3 4/*- 5 * Copyright (C) 2001 Benno Rice 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28/*- 29 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 30 * Copyright (C) 1995, 1996 TooLs GmbH. 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by TooLs GmbH. 44 * 4. The name of TooLs GmbH may not be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 52 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 53 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 54 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 55 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 56 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59#include "assym.s" 60 61#include <sys/syscall.h> 62 63#include <machine/trap.h> 64#include <machine/param.h> 65#include <machine/spr.h> 66#include <machine/asm.h> 67 68/* Locate the per-CPU data structure */ 69#define GET_CPUINFO(r) \ 70 mfsprg0 r 71 72/* 73 * Compiled KERNBASE location and the kernel load address 74 */ 75 .globl kernbase 76 .set kernbase, KERNBASE 77 78#define TMPSTKSZ 16384 /* 16K temporary stack */ 79 80/* 81 * Globals 82 */ 83 .data 84 .align 4 85GLOBAL(tmpstk) 86 .space TMPSTKSZ 87GLOBAL(esym) 88 .llong 0 /* end of symbol table */ 89 90#define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */ 91GLOBAL(intrnames) 92 .space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2 93GLOBAL(sintrnames) 94 .quad INTRCNT_COUNT * (MAXCOMLEN + 1) * 2 95 96 .align 4 97GLOBAL(intrcnt) 98 .space INTRCNT_COUNT * 4 * 2 99GLOBAL(sintrcnt) 100 .quad INTRCNT_COUNT * 4 * 2 101 102 .text 103 .globl btext 104btext: 105 106/* 107 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 108 * mark the start of kernel text. 109 */ 110 .globl kernel_text 111kernel_text: 112 113/* 114 * Startup entry. Note, this must be the first thing in the text 115 * segment! 116 */ 117 .text 118ASENTRY_NOPROF(__start) 119 li 8,0 120 li 9,0x100 121 mtctr 9 1221: 123 dcbf 0,8 124 icbi 0,8 125 addi 8,8,0x20 126 bdnz 1b 127 sync 128 isync 129 130 /* Save the argument pointer and length */ 131 mr 20,6 132 mr 21,7 133 134 lis 8,openfirmware_entry@ha 135 std 5,openfirmware_entry@l(8) /* save client interface handler */ 136 137 /* Set up the stack pointer */ 138 lis 1,(tmpstk+TMPSTKSZ-48)@ha 139 addi 1,1,(tmpstk+TMPSTKSZ-48)@l 140 141 /* Set up the TOC pointer */ 142 lis 2,tocbase@ha 143 ld 2,tocbase@l(2) 144 145 mfmsr 0 146 lis 9,ofmsr@ha 147 stdu 0,ofmsr@l(9) 148 149 mfsprg0 0 /* save SPRG0-3 */ 150 std 0,8(9) /* ofmsr[1] = sprg0 */ 151 mfsprg1 0 152 std 0,16(9) /* ofmsr[2] = sprg1 */ 153 mfsprg2 0 154 std 0,24(9) /* ofmsr[3] = sprg2 */ 155 mfsprg3 0 156 std 0,32(9) /* ofmsr[4] = sprg3 */ 157 158 /* Switch to 64-bit mode */ 159 mfmsr 9 160 li 8,1 161 insrdi 9,8,1,0 162 mtmsrd 9 163 164 bl OF_initial_setup 165 nop 166 167 lis 4,end@ha 168 addi 4,4,end@l 169 mr 5,4 170 171 lis 3,kernbase@ha 172 addi 3,3,kernbase@l 173 174 /* Restore the argument pointer and length */ 175 mr 6,20 176 mr 7,21 177 178 bl powerpc_init 179 nop 180 mr %r1, %r3 181 li %r3, 0 182 std %r3, 0(%r1) 183 bl mi_startup 184 nop 185 b OF_exit 186 nop 187 188/* 189 * PPC64 ABI TOC base 190 */ 191 192 .align 3 193 .globl tocbase 194tocbase: 195 .llong .TOC.@tocbase 196 197/* 198 * int setfault() 199 * 200 * Similar to setjmp to setup for handling faults on accesses to user memory. 201 * Any routine using this may only call bcopy, either the form below, 202 * or the (currently used) C code optimized, so it doesn't use any non-volatile 203 * registers. 204 */ 205ASENTRY_NOPROF(setfault) 206 mflr 0 207 mfcr 12 208 mfsprg 4,0 209 ld 4,TD_PCB(13) /* curthread = r13 */ 210 std 3,PCB_ONFAULT(4) 211 std 0,0(3) 212 std 1,8(3) 213 std 2,16(3) 214 215 std %r12,24(%r3) /* Save the non-volatile GP regs. */ 216 std %r13,24+1*8(%r3) 217 std %r14,24+2*8(%r3) 218 std %r15,24+3*8(%r3) 219 std %r16,24+4*8(%r3) 220 std %r17,24+5*8(%r3) 221 std %r18,24+6*8(%r3) 222 std %r19,24+7*8(%r3) 223 std %r20,24+8*8(%r3) 224 std %r21,24+9*8(%r3) 225 std %r22,24+10*8(%r3) 226 std %r23,24+11*8(%r3) 227 std %r24,24+12*8(%r3) 228 std %r25,24+13*8(%r3) 229 std %r26,24+14*8(%r3) 230 std %r27,24+15*8(%r3) 231 std %r28,24+16*8(%r3) 232 std %r29,24+17*8(%r3) 233 std %r30,24+18*8(%r3) 234 std %r31,24+19*8(%r3) 235 236 xor 3,3,3 237 blr 238 239#include <powerpc/aim/trap_subr64.S> 240