1/* $NetBSD: pmppc_locore.S,v 1.12 2018/07/15 05:16:42 maxv 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_multiprocessor.h" 38#include "opt_openpic.h" 39#include "opt_ppcparam.h" 40#include "assym.h" 41 42#include <sys/syscall.h> 43 44#include <machine/param.h> 45#include <machine/psl.h> 46#include <machine/trap.h> 47#include <machine/asm.h> 48 49#include <powerpc/spr.h> 50#include <powerpc/oea/spr.h> 51#include <powerpc/oea/hid.h> 52 53#include "ksyms.h" 54 55/* 56 * Some instructions gas doesn't understand (yet?) 57 */ 58#define bdneq bdnzf 2, 59 60/* 61 * Globals 62 */ 63GLOBAL(startsym) 64 .long 0 /* start symbol table */ 65GLOBAL(endsym) 66 .long 0 /* end symbol table */ 67GLOBAL(oeacpufeat) 68 .long 0 /* cpu features */ 69/* 70 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 71 * mark the start of kernel text. 72 */ 73 .text 74 .globl _C_LABEL(kernel_text) 75_C_LABEL(kernel_text): 76 77/* 78 * Startup entry. Note, this must be the first thing in the text 79 * segment! 80 */ 81 .text 82 .globl __start 83__start: 84 li 0,0 85 mtmsr 0 /* Disable FPU/MMU/exceptions */ 86 isync 87 88 /* Enable data and instruction caches */ 89/* 90 mfspr 8,1008 91 ori 8, 8, (HID0_ICE | HID0_DCE)@l 92 mtspr 1008,8 93*/ 94 95/* compute end of kernel memory */ 96 lis 4,_C_LABEL(end)@ha 97 addi 4,4,_C_LABEL(end)@l 98 99 INIT_CPUINFO(4,1,9,5) 100 101 lis 3,__start@ha 102 addi 3,3,__start@l 103 104 xor 5,5,5 105 xor 6,6,6 106 bl _C_LABEL(initppc) 107 108 sync 109 isync 110 mfspr 8,SPR_HID0 111 ori 8, 8, (HID0_ICE | HID0_DCE)@l 112 isync 113 mtspr SPR_HID0,8 114 sync 115 isync 116 117 bl _C_LABEL(main) 118 119loop: b loop /* XXX not reached */ 120 121 .globl _C_LABEL(enable_intr) 122_C_LABEL(enable_intr): 123 mfmsr 3 124 ori 3,3,PSL_EE@l 125 mtmsr 3 126 blr 127 128 .globl _C_LABEL(disable_intr) 129_C_LABEL(disable_intr): 130 mfmsr 3 131 andi. 3,3,~PSL_EE@l 132 mtmsr 3 133 blr 134 135/* 136 * Include common switch / setfault code 137 */ 138#include <powerpc/powerpc/locore_subr.S> 139 140/* 141 * Include common trap / exception code 142 */ 143#include <powerpc/powerpc/trap_subr.S> 144 145/* 146 * Include PIO routines 147 */ 148#include <powerpc/powerpc/pio_subr.S> 149