153 lines
3.7 KiB
ArmAsm
153 lines
3.7 KiB
ArmAsm
/* $NetBSD: pmppc_locore.S,v 1.7 2010/03/03 00:30:15 pooka Exp $ */
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/* $OpenBSD: locore.S,v 1.4 1997/01/26 09:06:38 rahnds Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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#include "opt_ipkdb.h"
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#include "opt_multiprocessor.h"
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#include "opt_openpic.h"
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#include "opt_ppcparam.h"
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#include "assym.h"
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#include <sys/syscall.h>
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#include <machine/param.h>
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#include <machine/vmparam.h>
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#include <machine/pmap.h>
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#include <machine/psl.h>
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#include <machine/trap.h>
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#define _NOREGNAMES
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#include <machine/asm.h>
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#include <powerpc/spr.h>
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#include <powerpc/oea/spr.h>
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#include <powerpc/oea/hid.h>
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#include "ksyms.h"
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/*
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* Some instructions gas doesn't understand (yet?)
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*/
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#define bdneq bdnzf 2,
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/*
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* Globals
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*/
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GLOBAL(startsym)
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.long 0 /* start symbol table */
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GLOBAL(endsym)
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.long 0 /* end symbol table */
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GLOBAL(oeacpufeat)
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.long 0 /* cpu features */
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/*
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* This symbol is here for the benefit of kvm_mkdb, and is supposed to
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* mark the start of kernel text.
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*/
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.text
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.globl _C_LABEL(kernel_text)
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_C_LABEL(kernel_text):
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/*
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* Startup entry. Note, this must be the first thing in the text
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* segment!
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*/
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.text
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.globl __start
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__start:
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li 0,0
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mtmsr 0 /* Disable FPU/MMU/exceptions */
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isync
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/* Enable data and instruction caches */
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/*
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mfspr 8,1008
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ori 8, 8, (HID0_ICE | HID0_DCE)@l
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mtspr 1008,8
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*/
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/* compute end of kernel memory */
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lis 4,_C_LABEL(end)@ha
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addi 4,4,_C_LABEL(end)@l
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INIT_CPUINFO(4,1,9,0)
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lis 3,__start@ha
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addi 3,3,__start@l
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xor 5,5,5
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xor 6,6,6
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bl _C_LABEL(initppc)
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sync
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isync
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mfspr 8,SPR_HID0
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ori 8, 8, (HID0_ICE | HID0_DCE)@l
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isync
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mtspr SPR_HID0,8
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sync
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isync
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bl _C_LABEL(main)
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loop: b loop /* XXX not reached */
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.globl _C_LABEL(enable_intr)
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_C_LABEL(enable_intr):
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mfmsr 3
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ori 3,3,PSL_EE@l
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mtmsr 3
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blr
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.globl _C_LABEL(disable_intr)
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_C_LABEL(disable_intr):
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mfmsr 3
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andi. 3,3,~PSL_EE@l
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mtmsr 3
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blr
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/*
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* Include common switch / setfault code
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*/
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#include <powerpc/powerpc/locore_subr.S>
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/*
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* Include common trap / exception code
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*/
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#include <powerpc/powerpc/trap_subr.S>
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/*
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* Include PIO routines
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*/
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#include <powerpc/powerpc/pio_subr.S>
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