1787909001
Renovate and improve the AIM Open Firmware support: - Add RTAS (Run-Time Abstraction Services) support, found on all IBM systems and some Apple ones - Improve support for 32-bit real mode Open Firmware systems - Pull some more OF bits over from the AIM directory - Fix memory detection on IBM LPARs and systems with more than one /memory node (by andreast@)
238 lines
6.1 KiB
ArmAsm
238 lines
6.1 KiB
ArmAsm
/* $FreeBSD$ */
|
|
/* $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
|
|
|
|
/*
|
|
* 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)
|
|
.llong 0 /* end of symbol table */
|
|
|
|
#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)
|
|
|
|
.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
|
|
ASENTRY(__start)
|
|
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
|
|
std 5,openfirmware_entry@l(8) /* save client interface handler */
|
|
|
|
/* Set up the stack pointer */
|
|
lis 1,(tmpstk+TMPSTKSZ-48)@ha
|
|
addi 1,1,(tmpstk+TMPSTKSZ-48)@l
|
|
|
|
/* Set up the TOC pointer */
|
|
lis 2,tocbase@ha
|
|
ld 2,tocbase@l(2)
|
|
|
|
mfmsr 0
|
|
lis 9,ofmsr@ha
|
|
stdu 0,ofmsr@l(9)
|
|
|
|
mfsprg0 0 /* save SPRG0-3 */
|
|
std 0,8(9) /* ofmsr[1] = sprg0 */
|
|
mfsprg1 0
|
|
std 0,16(9) /* ofmsr[2] = sprg1 */
|
|
mfsprg2 0
|
|
std 0,24(9) /* ofmsr[3] = sprg2 */
|
|
mfsprg3 0
|
|
std 0,32(9) /* ofmsr[4] = sprg3 */
|
|
|
|
/* Switch to 64-bit mode */
|
|
mfmsr 9
|
|
li 8,1
|
|
insrdi 9,8,1,0
|
|
mtmsrd 9
|
|
|
|
bl OF_initial_setup
|
|
nop
|
|
|
|
lis 4,end@ha
|
|
addi 4,4,end@l
|
|
mr 5,4
|
|
|
|
lis 3,kernbase@ha
|
|
addi 3,3,kernbase@l
|
|
|
|
/* Restore the argument pointer and length */
|
|
mr 6,20
|
|
mr 7,21
|
|
|
|
bl powerpc_init
|
|
nop
|
|
mr %r1, %r3
|
|
li %r3, 0
|
|
std %r3, 0(%r1)
|
|
bl mi_startup
|
|
nop
|
|
b OF_exit
|
|
nop
|
|
|
|
/*
|
|
* PPC64 ABI TOC base
|
|
*/
|
|
|
|
.align 3
|
|
.globl tocbase
|
|
tocbase:
|
|
.llong .TOC.@tocbase
|
|
|
|
/*
|
|
* 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(setfault)
|
|
mflr 0
|
|
mfcr 12
|
|
mfsprg 4,0
|
|
ld 4,PC_CURTHREAD(4)
|
|
ld 4,TD_PCB(4)
|
|
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>
|