exynos5_mp.c revision 266203 
1/*-
2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
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
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/10/sys/arm/samsung/exynos/exynos5_mp.c 266203 2014-05-16 00:14:50Z ian $");
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/lock.h>
33#include <sys/mutex.h>
34#include <sys/smp.h>
35
36#include <machine/smp.h>
37#include <machine/fdt.h>
38#include <machine/intr.h>
39
40#define	EXYNOS_SYSRAM			0x02020000
41
42void
43platform_mp_init_secondary(void)
44{
45
46	gic_init_secondary();
47}
48
49void
50platform_mp_setmaxid(void)
51{
52
53	mp_maxid = 1;
54}
55
56int
57platform_mp_probe(void)
58{
59
60	mp_ncpus = 2;
61	return (1);
62}
63
64void
65platform_mp_start_ap(void)
66{
67	bus_addr_t sysram;
68	int err;
69
70	err = bus_space_map(fdtbus_bs_tag, EXYNOS_SYSRAM, 0x100, 0, &sysram);
71	if (err != 0)
72		panic("Couldn't map sysram\n");
73
74	bus_space_write_4(fdtbus_bs_tag, sysram, 0x0,
75	    pmap_kextract((vm_offset_t)mpentry));
76
77	cpu_idcache_wbinv_all();
78	cpu_l2cache_wbinv_all();
79
80	armv7_sev();
81	bus_space_unmap(fdtbus_bs_tag, sysram, 0x100);
82}
83
84void
85platform_ipi_send(cpuset_t cpus, u_int ipi)
86{
87
88	pic_ipi_send(cpus, ipi);
89}
90