91416fb268
of OFW access semantics, in order to allow future support for real-mode OF access and flattened device frees. OF client interface modules are implemented using KOBJ, in a similar way to the PPC PMAP modules. Because we need Open Firmware to be available before mutexes can be used on sparc64, changes are also included to allow KOBJ to be used very early in the boot process by only using the mutex once we know it has been initialized. Reviewed by: marius, grehan
210 lines
5.7 KiB
ArmAsm
210 lines
5.7 KiB
ArmAsm
/* $FreeBSD$ */
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/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
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/*-
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* Copyright (C) 2001 Benno Rice
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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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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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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/*-
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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 "assym.s"
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#include <sys/syscall.h>
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#include <machine/trap.h>
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#include <machine/param.h>
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#include <machine/sr.h>
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#include <machine/spr.h>
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#include <machine/psl.h>
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#include <machine/asm.h>
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/* Locate the per-CPU data structure */
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#define GET_CPUINFO(r) \
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mfsprg0 r
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/*
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* Compiled KERNBASE location and the kernel load address
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*/
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.globl kernbase
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.set kernbase, KERNBASE
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#define TMPSTKSZ 8192 /* 8K temporary stack */
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/*
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* Globals
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*/
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.data
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.align 4
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GLOBAL(tmpstk)
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.space TMPSTKSZ
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GLOBAL(esym)
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.long 0 /* end of symbol table */
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GLOBAL(ofmsr)
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.long 0, 0, 0, 0, 0 /* msr/sprg0-3 used in Open Firmware */
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#define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */
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GLOBAL(intrnames)
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.space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2
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GLOBAL(eintrnames)
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.align 4
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GLOBAL(intrcnt)
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.space INTRCNT_COUNT * 4 * 2
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GLOBAL(eintrcnt)
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/*
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* File-scope for locore.S
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*/
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idle_u:
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.long 0 /* fake uarea during idle after exit */
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openfirmware_entry:
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.long 0 /* Open Firmware entry point */
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srsave:
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.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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.text
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.globl btext
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btext:
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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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.globl kernel_text
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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 8,0
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li 9,0x100
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mtctr 9
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1:
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dcbf 0,8
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icbi 0,8
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addi 8,8,0x20
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bdnz 1b
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sync
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isync
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/* Save the argument pointer and length */
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mr 20,6
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mr 21,7
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lis 8,openfirmware_entry@ha
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stw 5,openfirmware_entry@l(8) /* save client interface handler */
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lis 1,(tmpstk+TMPSTKSZ-16)@ha
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addi 1,1,(tmpstk+TMPSTKSZ-16)@l
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mfmsr 0
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lis 9,ofmsr@ha
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stwu 0,ofmsr@l(9)
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mfsprg0 0 /* save SPRG0-3 */
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stw 0,4(9) /* ofmsr[1] = sprg0 */
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mfsprg1 0
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stw 0,8(9) /* ofmsr[2] = sprg1 */
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mfsprg2 0
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stw 0,12(9) /* ofmsr[3] = sprg2 */
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mfsprg3 0
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stw 0,16(9) /* ofmsr[4] = sprg3 */
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bl OF_initial_setup
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lis 4,end@ha
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addi 4,4,end@l
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mr 5,4
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lis 3,kernel_text@ha
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addi 3,3,kernel_text@l
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/* Restore the argument pointer and length */
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mr 6,20
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mr 7,21
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bl powerpc_init
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mr %r1, %r3
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li %r3, 0
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stw %r3, 0(%r1)
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bl mi_startup
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b OF_exit
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/*
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* int setfault()
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*
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* Similar to setjmp to setup for handling faults on accesses to user memory.
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* Any routine using this may only call bcopy, either the form below,
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* or the (currently used) C code optimized, so it doesn't use any non-volatile
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* registers.
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*/
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.globl setfault
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setfault:
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mflr 0
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mfcr 12
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mfsprg 4,0
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lwz 4,PC_CURTHREAD(4)
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lwz 4,TD_PCB(4)
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stw 3,PCB_ONFAULT(4)
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stw 0,0(3)
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stw 1,4(3)
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stw 2,8(3)
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stmw 12,12(3)
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xor 3,3,3
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blr
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#include <powerpc/aim/trap_subr.S>
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