1/* $NetBSD: pmppc_locore.S,v 1.13 2021/02/26 02:18:56 thorpej 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 */ 67/* 68 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 69 * mark the start of kernel text. 70 */ 71 .text 72 .globl _C_LABEL(kernel_text) 73_C_LABEL(kernel_text): 74 75/* 76 * Startup entry. Note, this must be the first thing in the text 77 * segment! 78 */ 79 .text 80 .globl __start 81__start: 82 li 0,0 83 mtmsr 0 /* Disable FPU/MMU/exceptions */ 84 isync 85 86 /* Enable data and instruction caches */ 87/* 88 mfspr 8,1008 89 ori 8, 8, (HID0_ICE | HID0_DCE)@l 90 mtspr 1008,8 91*/ 92 93/* compute end of kernel memory */ 94 lis 4,_C_LABEL(end)@ha 95 addi 4,4,_C_LABEL(end)@l 96 97 INIT_CPUINFO(4,1,9,5) 98 99 lis 3,__start@ha 100 addi 3,3,__start@l 101 102 xor 5,5,5 103 xor 6,6,6 104 bl _C_LABEL(initppc) 105 106 sync 107 isync 108 mfspr 8,SPR_HID0 109 ori 8, 8, (HID0_ICE | HID0_DCE)@l 110 isync 111 mtspr SPR_HID0,8 112 sync 113 isync 114 115 bl _C_LABEL(main) 116 117loop: b loop /* XXX not reached */ 118 119 .globl _C_LABEL(enable_intr) 120_C_LABEL(enable_intr): 121 mfmsr 3 122 ori 3,3,PSL_EE@l 123 mtmsr 3 124 blr 125 126 .globl _C_LABEL(disable_intr) 127_C_LABEL(disable_intr): 128 mfmsr 3 129 andi. 3,3,~PSL_EE@l 130 mtmsr 3 131 blr 132 133/* 134 * Include common switch / setfault code 135 */ 136#include <powerpc/powerpc/locore_subr.S> 137 138/* 139 * Include common trap / exception code 140 */ 141#include <powerpc/powerpc/trap_subr.S> 142 143/* 144 * Include PIO routines 145 */ 146#include <powerpc/powerpc/pio_subr.S> 147