/* $NetBSD: locore.S,v 1.39 2008/04/08 02:33:03 garbled 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_ipkdb.h" #include "opt_lockdebug.h" #include "opt_multiprocessor.h" #include "opt_ppcparam.h" #include "assym.h" #include <sys/syscall.h> #include <machine/param.h> #include <machine/pmap.h> #include <machine/psl.h> #include <machine/trap.h> #define _NOREGNAMES #include <machine/asm.h> #include <machine/vmparam.h> #include <powerpc/spr.h> #include "ksyms.h" /* * Some instructions gas doesn't understand (yet?) */ #define bdneq bdnzf 2, /* * Globals */ .data GLOBAL(esym) .long 0 /* end of symbol table */ GLOBAL(proc0paddr) .long 0 /* proc0 p_addr */ GLOBAL(oeacpufeat) .long 0 /* cpu features */ /* * 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: bl _C_LABEL(ofwinit) /* init our OF hooks */ li 0,0 mtmsr 0 /* Disable FPU/MMU/exceptions */ bl _C_LABEL(cpu_model_init) lis 12,oeacpufeat@ha lwz 12,oeacpufeat@l(12) andi. 12,12,OEACPU_64_BRIDGE /* Compare against OEACPU_64_BRIDGE */ beq 2f /* skip if this is a 32bit part */ li 0,0 sync slbia /* invalidate the slb table */ sync clrldi 0,0,32 /* clear SF/ISF (high order bits) */ mtmsrd 0 mtspr 0x118,0 /* clear ASR[V] to enable segregs */ 2: isync /* compute end of kernel memory */ lis 4,_C_LABEL(end)@ha addi 4,4,_C_LABEL(end)@l #if NKSYMS || defined(DDB) || defined(LKM) /* skip symbol table */ cmpwi 6,0 beq 1f add 9,6,7 /* r9 = args + l */ lwz 9,-8(9) /* esym */ cmpwi 9,0 beq 1f mr 4,9 1: #endif /* * Initialize cpu_info[0] */ INIT_CPUINFO(4,1,9,0) lis 3,__start@ha addi 3,3,__start@l mr 5,6 /* args string */ bl _C_LABEL(initppc) bl _C_LABEL(main) b _C_LABEL(OF_exit) /* * Pull in common OFW code. */ #include <powerpc/oea/ofw_subr.S> /* * Pull in common switch / setfault code. */ #include <powerpc/powerpc/locore_subr.S> /* * Pull in common trap vector code. */ #include <powerpc/powerpc/trap_subr.S> /* * Pull in common pio / bus_space code. */ #include <powerpc/powerpc/pio_subr.S>