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
44 static void aeon_pbutton_intr(void *_unused);
45 static void aeon_setup_intr(void *unused);
46
47 static int aeon_probe(platform_t);
48 static int aeon_attach(platform_t);
49
50 static platform_method_t aeon_methods[] = {
51 PLATFORMMETHOD(platform_probe, aeon_probe),
52 PLATFORMMETHOD(platform_attach, aeon_attach),
53 PLATFORMMETHOD_END
54 };
55
56 DEFINE_CLASS_1(aeon, aeon_platform, aeon_methods, 0, mpc85xx_platform);
57
58 PLATFORM_DEF(aeon_platform);
59
60 static bool is_aeon;
61
62 static int
aeon_probe(platform_t plat)63 aeon_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
78 static int
aeon_attach(platform_t plat)79 aeon_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). */
93 static void
aeon_pbutton_intr(void * _unused)94 aeon_pbutton_intr(void *_unused)
95 {
96 devctl_notify("AEON", "power", "press", NULL);
97 }
98
99 /* Manually configure the power button IRQ handler. */
100 static void
aeon_setup_intr(void * unused)101 aeon_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
120 SYSINIT(aeon_setup_intr, SI_SUB_CONFIGURE, SI_ORDER_ANY, aeon_setup_intr, NULL);
121