1 /*-
2 * Copyright (c) 2015 Andrew Turner
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
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/bus.h>
31 #include <sys/pcpu.h>
32 #include <sys/smp.h>
33
34 #include <vm/vm.h>
35 #include <vm/pmap.h>
36
37 #include <machine/intr.h>
38 #include <machine/platformvar.h>
39 #include <machine/smp.h>
40
41 #include <dev/ofw/openfirm.h>
42 #include <dev/ofw/ofw_cpu.h>
43 #include <dev/psci/psci.h>
44
45 #include <arm/qemu/virt_mp.h>
46
47 static int running_cpus;
48
49 static bool
virt_start_ap(u_int id,phandle_t node,u_int addr_cells,pcell_t * reg)50 virt_start_ap(u_int id, phandle_t node, u_int addr_cells, pcell_t *reg)
51 {
52 int err;
53
54 if (running_cpus >= mp_ncpus)
55 return (false);
56 running_cpus++;
57
58 err = psci_cpu_on(*reg, pmap_kextract((vm_offset_t)mpentry), id);
59
60 if (err != PSCI_RETVAL_SUCCESS)
61 return (false);
62
63 return (true);
64 }
65
66 void
virt_mp_start_ap(platform_t plat)67 virt_mp_start_ap(platform_t plat)
68 {
69
70 ofw_cpu_early_foreach(virt_start_ap, true);
71 }
72