1/*-
2 * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#include <machine/asm.h>
30
31	.set noreorder
32
33#ifdef SMP
34/*
35 * This function must be implemented in assembly because it is called early
36 * in AP boot without a valid stack.
37 */
38LEAF(platform_processor_id)
39	.set push
40	.set mips32r2
41	jr	ra
42	rdhwr	v0, $0
43	.set pop
44END(platform_processor_id)
45
46/*
47 * Called on APs to wait until they are told to launch.
48 */
49LEAF(octeon_ap_wait)
50	jal	platform_processor_id
51	nop
52
531:	lld	t0, octeon_ap_boot
54	bne	v0, t0, 1b
55	nop
56
57	move	t0, zero
58	scd	t0, octeon_ap_boot
59
60	beqz	t0, 1b
61	nop
62
63	j	mpentry
64	nop
65END(octeon_ap_wait)
66#endif
67