Annotation of sys/arch/landisk/landisk/locore.S, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: locore.S,v 1.2 2007/02/06 23:13:37 miod Exp $ */
! 2: /* $NetBSD: locore.S,v 1.1 2006/09/01 21:26:18 uwe Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2002 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by the NetBSD
! 19: * Foundation, Inc. and its contributors.
! 20: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 21: * contributors may be used to endorse or promote products derived
! 22: * from this software without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 25: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 26: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 27: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 28: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 29: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 30: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 31: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 32: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 33: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 34: * POSSIBILITY OF SUCH DAMAGE.
! 35: */
! 36:
! 37: #include "assym.h"
! 38:
! 39: #include <sh/asm.h>
! 40: #include <sh/locore.h>
! 41: #include <sh/trap.h>
! 42: #include <sh/mmu_sh4.h>
! 43:
! 44: /*
! 45: * void start(int howto, void *bootinfo);
! 46: * Kernel entry point.
! 47: */
! 48: NENTRY(start)
! 49: ALTENTRY(kernel_text)
! 50: /* Set bootstrap stack pointer */
! 51: mov.l _L.bootstrap_stack, r15
! 52:
! 53: /* Mask all interrupt */
! 54: __INTR_MASK(r0, r1)
! 55:
! 56: /* MMU off */
! 57: mov.l _L.MMUCR, r0
! 58: xor r1, r1
! 59: mov.l r1, @r0
! 60:
! 61: /* Make sure to change register bank 0 */
! 62: mov #0x20, r1
! 63: stc sr, r0
! 64: swap.b r1, r1
! 65: swap.w r1, r1
! 66: not r1, r1
! 67: and r1, r0
! 68: ldc r0, sr /* SR.RB = 0 */
! 69:
! 70: /* Go! */
! 71: mov.l _L.landisk_startup, r0
! 72: jmp @r0
! 73: nop
! 74:
! 75: /* NOTREACHED */
! 76: .align 2
! 77: _L.landisk_startup: .long _C_LABEL(landisk_startup)
! 78: _L.bootstrap_stack: .long _C_LABEL(start)
! 79: _L.MMUCR: .long SH4_MMUCR
! 80:
! 81: ENTRY(getramsize)
! 82: mov #4, r0
! 83: trapa #0x3f
! 84: rts
! 85: nop
CVSweb