1/*
2 * $NetBSD: start.s,v 1.7 2000/12/04 20:31:16 scw Exp $
3 *
4 * Copyright (c) 1995 Charles D. Cranor
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27/*
28 * start: at address 0x4000, load at 0xa000 (so put stack at 0x9ff0)
29 */
30
31#include <m68k/asm.h>
32
33	.text
34ASENTRY_NOPROFILE(_start)
35ASENTRY_NOPROFILE(start)
36	movb	#0,_C_LABEL(reboot)
37	jra	Ldoit
38restart:
39	movb	#1,_C_LABEL(reboot) | fall through
40
41Ldoit:
42	movl	#0x00006ff0,%sp
43	jsr _C_LABEL(sboot)
44
45Lname:
46	.ascii "sboot\0"
47
48ENTRY_NOPROFILE(go)
49	clrl	%d0		| dev lun
50	clrl	%d1		| ctrl lun
51	movl	#0x2c, %d4	| flags for IPL
52	movl	#0xfffe1800, %a0	| address of "disk" ctrl
53	movl	%sp@(4), %a1	| entry point of loaded program
54	movl	%d0, %a2	| media config block (NULL)
55	movl	%sp@(8), %a3	| nb args (start)
56	movl	%sp@(12), %a4	| nb end args
57	movl	#Lname, %a5	| args
58	movl	#Lname+5, %a6	| end args
59				| SRT0 will set stack
60	jmp	%a1@		| GO!
61