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/* $FreeBSD$ */
/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
/*-
* Copyright (C) 2001 Benno Rice
* 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.
*
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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.
*/
/*-
* 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 "assym.s"
#include <sys/syscall.h>
#include <machine/trap.h>
#include <machine/param.h>
#include <machine/sr.h>
#include <machine/spr.h>
#include <machine/psl.h>
#include <machine/asm.h>
/* Locate the per-CPU data structure */
#define GET_CPUINFO(r) \
mfsprg0 r
/*
* Compiled KERNBASE location and the kernel load address
*/
.globl kernbase
.set kernbase, KERNBASE
#define TMPSTKSZ 8192 /* 8K temporary stack */
/*
* Globals
*/
.data
.align 4
GLOBAL(tmpstk)
.space TMPSTKSZ
GLOBAL(esym)
.long 0 /* end of symbol table */
GLOBAL(ofmsr)
.long 0, 0, 0, 0, 0 /* msr/sprg0-3 used in Open Firmware */
#define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */
GLOBAL(intrnames)
.space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2
GLOBAL(eintrnames)
.align 4
GLOBAL(intrcnt)
.space INTRCNT_COUNT * 4 * 2
GLOBAL(eintrcnt)
/*
* File-scope for locore.S
*/
idle_u:
.long 0 /* fake uarea during idle after exit */
openfirmware_entry:
.long 0 /* Open Firmware entry point */
srsave:
.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.text
.globl btext
btext:
/*
* This symbol is here for the benefit of kvm_mkdb, and is supposed to
* mark the start of kernel text.
*/
.globl kernel_text
kernel_text:
/*
* Startup entry. Note, this must be the first thing in the text
* segment!
*/
.text
.globl __start
__start:
#ifdef FIRMWORKSBUGS
mfmsr 0
andi. 0,0,PSL_IR|PSL_DR
beq 1f
bl ofwr_init
1:
#endif
li 8,0
li 9,0x100
mtctr 9
1:
dcbf 0,8
icbi 0,8
addi 8,8,0x20
bdnz 1b
sync
isync
/* Save the argument pointer and length */
mr 20,6
mr 21,7
lis 8,openfirmware_entry@ha
stw 5,openfirmware_entry@l(8) /* save client interface handler */
mr 3,5
lis 1,(tmpstk+TMPSTKSZ-16)@ha
addi 1,1,(tmpstk+TMPSTKSZ-16)@l
mfmsr 0
lis 9,ofmsr@ha
stwu 0,ofmsr@l(9)
mfsprg0 0 /* save SPRG0-3 */
stw 0,4(9) /* ofmsr[1] = sprg0 */
mfsprg1 0
stw 0,8(9) /* ofmsr[2] = sprg1 */
mfsprg2 0
stw 0,12(9) /* ofmsr[3] = sprg2 */
mfsprg3 0
stw 0,16(9) /* ofmsr[4] = sprg3 */
bl OF_init
lis 4,end@ha
addi 4,4,end@l
mr 5,4
lis 3,kernel_text@ha
addi 3,3,kernel_text@l
/* Restore the argument pointer and length */
mr 6,20
mr 7,21
bl powerpc_init
mr %r1, %r3
li %r3, 0
stw %r3, 0(%r1)
bl mi_startup
b OF_exit
/*
* int setfault()
*
* Similar to setjmp to setup for handling faults on accesses to user memory.
* Any routine using this may only call bcopy, either the form below,
* or the (currently used) C code optimized, so it doesn't use any non-volatile
* registers.
*/
.globl setfault
setfault:
mflr 0
mfcr 12
mfsprg 4,0
lwz 4,PC_CURTHREAD(4)
lwz 4,TD_PCB(4)
stw 3,PCB_ONFAULT(4)
stw 0,0(3)
stw 1,4(3)
stw 2,8(3)
stmw 12,12(3)
xor 3,3,3
blr
#include <powerpc/aim/trap_subr.S>
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