1 /* $NetBSD: start.S,v 1.3 2005/12/11 12:16:41 christos Exp $ */
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jonathan Stone, Michael Hitch and Simon Burge.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
33 * Copyright (c) 1992, 1993
34 * The Regents of the University of California. All rights reserved.
36 * This code is derived from software contributed to Berkeley by
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * @(#)start.s 8.2 (Berkeley) 1/21/94
69 * Contains code that is the first executed at boot time.
71 * Copyright (C) 1989 Digital Equipment Corporation.
72 * Permission to use, copy, modify, and distribute this software and
73 * its documentation for any purpose and without fee is hereby granted,
74 * provided that the above copyright notice appears in all copies.
75 * Digital Equipment Corporation makes no representations about the
76 * suitability of this software for any purpose. It is provided "as is"
77 * without express or implied warranty.
79 * from: Header: /sprite/src/boot/decprom/ds3100.md/RCS/start.s,
80 * v 1.1 90/02/16 16:19:39 shirriff Exp SPRITE (DECWRL)
84 #include <mips/cpuregs.h>
92 addi sp, -CALLFRAME_SIZ
93 sw ra, CALLFRAME_RA(sp) # save ra
94 sw a0, 0(sp) # save argc
95 sw a1, 4(sp) # save argv
96 sw a2, 8(sp) # save envp
98 la v0, 0x80001000 # ARCBIOS_SPB
99 lw v0, 8 * 4(v0) # FirmwareVector
100 sw v0, _C_LABEL(ARCBIOS) # save ARCBIOS
101 lw v0, 136(v0) # (*ARCBIOS->FlushAllCache)()
104 la a0, _C_LABEL (edata) # clear BSS
106 la a2, _C_LABEL (end)
107 jal _C_LABEL(memset) # memset(edata, 0, end - edata)
109 lw a0, 0(sp) # restore argc
110 lw a1, 4(sp) # restore argv
111 jal _C_LABEL(main) # main(argc, argv, envp)
112 lw a2, 8(sp) # restore envp
113 lw ra, CALLFRAME_RA(sp) # restore RA
115 addi sp, CALLFRAME_SIZ