1/*-
2 * Copyright (c) 2019 Justin Hibbits
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/param.h>
27#include <sys/systm.h>
28#include <sys/kernel.h>
29#include <sys/bus.h>
30#include <sys/malloc.h>
31#include <sys/smp.h>
32
33#include <machine/intr_machdep.h>
34#include <machine/platform.h>
35#include <machine/platformvar.h>
36
37#include <dev/ofw/openfirm.h>
38#include <dev/ofw/ofw_bus.h>
39
40#include <powerpc/mpc85xx/mpc85xx.h>
41
42#include "platform_if.h"
43
44static void aeon_pbutton_intr(void *_unused);
45static void aeon_setup_intr(void *unused);
46
47static int aeon_probe(platform_t);
48static int aeon_attach(platform_t);
49
50static platform_method_t aeon_methods[] = {
51	PLATFORMMETHOD(platform_probe,		aeon_probe),
52	PLATFORMMETHOD(platform_attach,		aeon_attach),
53	PLATFORMMETHOD_END
54};
55
56DEFINE_CLASS_1(aeon, aeon_platform, aeon_methods, 0, mpc85xx_platform);
57
58PLATFORM_DEF(aeon_platform);
59
60static bool is_aeon;
61
62static int
63aeon_probe(platform_t plat)
64{
65	phandle_t rootnode;
66	char model[32];
67
68	rootnode = OF_finddevice("/");
69
70	if (OF_getprop(rootnode, "model", model, sizeof(model)) > 0) {
71		if (strncmp(model, "varisys,", strlen("varisys,")) == 0)
72			return (BUS_PROBE_SPECIFIC);
73	}
74
75	return (ENXIO);
76}
77
78static int
79aeon_attach(platform_t plat)
80{
81	int error;
82
83	error = mpc85xx_attach(plat);
84	if (error)
85		return (error);
86
87	is_aeon = true;
88
89	return (0);
90}
91
92/* Notify devd(8) that the power button was pressed (IRQ#4 on A-Eon machines). */
93static void
94aeon_pbutton_intr(void *_unused)
95{
96	devctl_notify("AEON", "power", "press", NULL);
97}
98
99/* Manually configure the power button IRQ handler. */
100static void
101aeon_setup_intr(void *unused)
102{
103	int irq;
104
105	if (!is_aeon)
106		return;
107
108	if (bootverbose)
109		printf("Configuring AmigaOne power button.\n");
110
111	irq = 4; /* From TRM, IRQ4 is raised when power button is pressed. */
112
113	/* Get us the root PIC. */
114	irq = MAP_IRQ(0, irq);
115	powerpc_config_intr(irq, INTR_TRIGGER_EDGE, INTR_POLARITY_LOW);
116	powerpc_setup_intr("power_button", irq, NULL, aeon_pbutton_intr, NULL,
117	    INTR_TYPE_MISC, NULL, 0);
118}
119
120SYSINIT(aeon_setup_intr, SI_SUB_CONFIGURE, SI_ORDER_ANY, aeon_setup_intr, NULL);
121