1/* $NetBSD: pmppc_locore.S,v 1.11 2011/06/20 19:56:11 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 "opt_kgdb.h" 37#include "opt_ipkdb.h" 38#include "opt_multiprocessor.h" 39#include "opt_openpic.h" 40#include "opt_ppcparam.h" 41#include "assym.h" 42 43#include <sys/syscall.h> 44 45#include <machine/param.h> 46#include <machine/psl.h> 47#include <machine/trap.h> 48#include <machine/asm.h> 49 50#include <powerpc/spr.h> 51#include <powerpc/oea/spr.h> 52#include <powerpc/oea/hid.h> 53 54#include "ksyms.h" 55 56/* 57 * Some instructions gas doesn't understand (yet?) 58 */ 59#define bdneq bdnzf 2, 60 61/* 62 * Globals 63 */ 64GLOBAL(startsym) 65 .long 0 /* start symbol table */ 66GLOBAL(endsym) 67 .long 0 /* end symbol table */ 68GLOBAL(oeacpufeat) 69 .long 0 /* cpu features */ 70/* 71 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 72 * mark the start of kernel text. 73 */ 74 .text 75 .globl _C_LABEL(kernel_text) 76_C_LABEL(kernel_text): 77 78/* 79 * Startup entry. Note, this must be the first thing in the text 80 * segment! 81 */ 82 .text 83 .globl __start 84__start: 85 li 0,0 86 mtmsr 0 /* Disable FPU/MMU/exceptions */ 87 isync 88 89 /* Enable data and instruction caches */ 90/* 91 mfspr 8,1008 92 ori 8, 8, (HID0_ICE | HID0_DCE)@l 93 mtspr 1008,8 94*/ 95 96/* compute end of kernel memory */ 97 lis 4,_C_LABEL(end)@ha 98 addi 4,4,_C_LABEL(end)@l 99 100 INIT_CPUINFO(4,1,9,5) 101 102 lis 3,__start@ha 103 addi 3,3,__start@l 104 105 xor 5,5,5 106 xor 6,6,6 107 bl _C_LABEL(initppc) 108 109 sync 110 isync 111 mfspr 8,SPR_HID0 112 ori 8, 8, (HID0_ICE | HID0_DCE)@l 113 isync 114 mtspr SPR_HID0,8 115 sync 116 isync 117 118 bl _C_LABEL(main) 119 120loop: b loop /* XXX not reached */ 121 122 .globl _C_LABEL(enable_intr) 123_C_LABEL(enable_intr): 124 mfmsr 3 125 ori 3,3,PSL_EE@l 126 mtmsr 3 127 blr 128 129 .globl _C_LABEL(disable_intr) 130_C_LABEL(disable_intr): 131 mfmsr 3 132 andi. 3,3,~PSL_EE@l 133 mtmsr 3 134 blr 135 136/* 137 * Include common switch / setfault code 138 */ 139#include <powerpc/powerpc/locore_subr.S> 140 141/* 142 * Include common trap / exception code 143 */ 144#include <powerpc/powerpc/trap_subr.S> 145 146/* 147 * Include PIO routines 148 */ 149#include <powerpc/powerpc/pio_subr.S> 150