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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/spr.h>
#include <machine/asm.h>
/* Locate the per-CPU data structure */
#define GET_CPUINFO(r) \
mfsprg0 r
#define GET_TOCBASE(r) \
li r,TRAP_TOCBASE; /* Magic address for TOC */ \
ld r,0(r)
/* Glue for linker script */
.globl kernbase
.set kernbase, KERNBASE
/*
* Globals
*/
.data
.align 3
GLOBAL(__startkernel)
.llong begin
GLOBAL(__endkernel)
.llong end
.align 4
#define TMPSTKSZ 16384 /* 16K temporary stack */
GLOBAL(tmpstk)
.space TMPSTKSZ
.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!
*
* Calling convention:
* r3: Flattened Device Tree pointer (or zero)
* r4: ignored
* r5: OF client interface pointer (or zero)
* r6: Loader metadata pointer (or zero)
*/
.text
ASENTRY_NOPROF(__start)
/* Set up the TOC pointer */
b 0f
.align 3
0: nop
bl 1f
.llong __tocbase + 0x8000
1: mflr %r2
ld %r2,0(%r2)
/* Set up the stack pointer */
lis %r1,(tmpstk+TMPSTKSZ-48)@ha
addi %r1,%r1,(tmpstk+TMPSTKSZ-48)@l
/* Switch to 64-bit mode */
mfmsr %r9
li %r8,1
insrdi %r9,%r8,1,0
mtmsrd %r9
isync
/* Begin CPU init */
mr %r4,%r2 /* Replace ignored r4 with tocbase for trap handlers */
bl powerpc_init
nop
/* Set stack pointer to new value and branch to mi_startup */
mr %r1, %r3
li %r3, 0
std %r3, 0(%r1)
bl mi_startup
nop
/* If this returns (it won't), go back to firmware */
b OF_exit
nop
/*
* 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.
*/
ASENTRY_NOPROF(setfault)
mflr 0
mfcr 12
mfsprg 4,0
ld 4,TD_PCB(13) /* curthread = r13 */
std 3,PCB_ONFAULT(4)
std 0,0(3)
std 1,8(3)
std 2,16(3)
std %r12,24(%r3) /* Save the non-volatile GP regs. */
std %r13,24+1*8(%r3)
std %r14,24+2*8(%r3)
std %r15,24+3*8(%r3)
std %r16,24+4*8(%r3)
std %r17,24+5*8(%r3)
std %r18,24+6*8(%r3)
std %r19,24+7*8(%r3)
std %r20,24+8*8(%r3)
std %r21,24+9*8(%r3)
std %r22,24+10*8(%r3)
std %r23,24+11*8(%r3)
std %r24,24+12*8(%r3)
std %r25,24+13*8(%r3)
std %r26,24+14*8(%r3)
std %r27,24+15*8(%r3)
std %r28,24+16*8(%r3)
std %r29,24+17*8(%r3)
std %r30,24+18*8(%r3)
std %r31,24+19*8(%r3)
xor 3,3,3
blr
#include <powerpc/aim/trap_subr64.S>
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