/* $OpenBSD: locore.S,v 1.2 2007/02/06 23:13:37 miod Exp $ */
/* $NetBSD: locore.S,v 1.1 2006/09/01 21:26:18 uwe Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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.h"
#include <sh/asm.h>
#include <sh/locore.h>
#include <sh/trap.h>
#include <sh/mmu_sh4.h>
/*
* void start(int howto, void *bootinfo);
* Kernel entry point.
*/
NENTRY(start)
ALTENTRY(kernel_text)
/* Set bootstrap stack pointer */
mov.l _L.bootstrap_stack, r15
/* Mask all interrupt */
__INTR_MASK(r0, r1)
/* MMU off */
mov.l _L.MMUCR, r0
xor r1, r1
mov.l r1, @r0
/* Make sure to change register bank 0 */
mov #0x20, r1
stc sr, r0
swap.b r1, r1
swap.w r1, r1
not r1, r1
and r1, r0
ldc r0, sr /* SR.RB = 0 */
/* Go! */
mov.l _L.landisk_startup, r0
jmp @r0
nop
/* NOTREACHED */
.align 2
_L.landisk_startup: .long _C_LABEL(landisk_startup)
_L.bootstrap_stack: .long _C_LABEL(start)
_L.MMUCR: .long SH4_MMUCR
ENTRY(getramsize)
mov #4, r0
trapa #0x3f
rts
nop