/* $NetBSD: wii_locore.S,v 1.2.2.3 2024/10/14 16:44:42 martin Exp $ */ /* $OpenBSD: locore.S,v 1.4 1997/01/26 09:06:38 rahnds Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "opt_ddb.h" #include "opt_kgdb.h" #include "opt_ppcparam.h" #include "assym.h" #include #include #include #include #include #include #include #include #include "ksyms.h" /* * Some instructions gas doesn't understand (yet?) */ #define bdneq bdnzf 2, /* * Globals */ GLOBAL(startsym) .long 0 /* start symbol table */ GLOBAL(endsym) .long 0 /* end symbol table */ /* * This symbol is here for the benefit of kvm_mkdb, and is supposed to * mark the start of kernel text. */ .text .globl _C_LABEL(kernel_text) _C_LABEL(kernel_text): /* * Startup entry. Note, this must be the first thing in the text * segment! */ .text .globl __start __start: b __mmu_init /* * Command-line argument protocol supported by HBC. */ .long 0x5f617267 /* WII_ARGV_MAGIC */ .globl _C_LABEL(wii_argv) _C_LABEL(wii_argv): .long 0 /* argv magic, set by loader */ .long 0 /* command line */ .long 0 /* command line length */ .long 0 /* argc */ .long 0 /* argv */ .long 0 /* end of argv */ __mmu_init: /* reset MMU to a known state */ #include "wii_mmuinit.S" /* compute end of kernel memory */ lis %r4, _C_LABEL(end)@ha addi %r4, %r4, _C_LABEL(end)@l #if NKSYMS || defined(DDB) || defined(MODULAR) /* If we had symbol table location we'd store it here and would've adjusted r4 here */ lis %r7, _C_LABEL(startsym)@ha addi %r7, %r7, _C_LABEL(startsym)@l stw %r4, 0(%r7) lis %r7, _C_LABEL(endsym)@ha addi %r7, %r7,_C_LABEL(endsym)@l stw %r4, 0(%r7) #endif lis %r1, 0 INIT_CPUINFO(%r4, %r1, %r9, %r0) lis %r3, __start@ha addi %r3, %r3, __start@l xor %r5, %r5, %r5 xor %r6, %r6, %r6 bl _C_LABEL(initppc) sync isync mfspr %r8, SPR_HID0 ori %r8, %r8, (HID0_ICE | HID0_DCE)@l isync mtspr SPR_HID0, %r8 sync isync bl _C_LABEL(main) loop: b loop /* XXX not reached */ .globl _C_LABEL(enable_intr) _C_LABEL(enable_intr): mfmsr %r3 ori %r3, %r3, PSL_EE@l mtmsr %r3 blr .globl _C_LABEL(disable_intr) _C_LABEL(disable_intr): mfmsr %r3 andi. %r3, %r3, ~PSL_EE@l mtmsr %r3 blr /* * Include common switch / setfault code */ #include /* * Include common trap / exception code */ #include /* * Include PIO routines */ #include