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/cdefs.h> 27 #include <sys/param.h> 28 #include <sys/systm.h> 29 #include <sys/kernel.h> 30 #include <sys/bus.h> 31 #include <sys/malloc.h> 32 #include <sys/smp.h> 33 34 #include <machine/intr_machdep.h> 35 #include <machine/platform.h> 36 #include <machine/platformvar.h> 37 38 #include <dev/ofw/openfirm.h> 39 #include <dev/ofw/ofw_bus.h> 40 41 #include <powerpc/mpc85xx/mpc85xx.h> 42 43 #include "platform_if.h" 44 45 static void aeon_pbutton_intr(void *_unused); 46 static void aeon_setup_intr(void *unused); 47 48 static int aeon_probe(platform_t); 49 static int aeon_attach(platform_t); 50 51 static platform_method_t aeon_methods[] = { 52 PLATFORMMETHOD(platform_probe, aeon_probe), 53 PLATFORMMETHOD(platform_attach, aeon_attach), 54 PLATFORMMETHOD_END 55 }; 56 57 DEFINE_CLASS_1(aeon, aeon_platform, aeon_methods, 0, mpc85xx_platform); 58 59 PLATFORM_DEF(aeon_platform); 60 61 static bool is_aeon; 62 63 static int 64 aeon_probe(platform_t plat) 65 { 66 phandle_t rootnode; 67 char model[32]; 68 69 rootnode = OF_finddevice("/"); 70 71 if (OF_getprop(rootnode, "model", model, sizeof(model)) > 0) { 72 if (strncmp(model, "varisys,", strlen("varisys,")) == 0) 73 return (BUS_PROBE_SPECIFIC); 74 } 75 76 return (ENXIO); 77 } 78 79 static int 80 aeon_attach(platform_t plat) 81 { 82 int error; 83 84 error = mpc85xx_attach(plat); 85 if (error) 86 return (error); 87 88 is_aeon = true; 89 90 return (0); 91 } 92 93 /* Notify devd(8) that the power button was pressed (IRQ#4 on A-Eon machines). */ 94 static void 95 aeon_pbutton_intr(void *_unused) 96 { 97 devctl_notify("AEON", "power", "press", NULL); 98 } 99 100 /* Manually configure the power button IRQ handler. */ 101 static void 102 aeon_setup_intr(void *unused) 103 { 104 int irq; 105 106 if (!is_aeon) 107 return; 108 109 if (bootverbose) 110 printf("Configuring AmigaOne power button.\n"); 111 112 irq = 4; /* From TRM, IRQ4 is raised when power button is pressed. */ 113 114 /* Get us the root PIC. */ 115 irq = MAP_IRQ(0, irq); 116 powerpc_config_intr(irq, INTR_TRIGGER_EDGE, INTR_POLARITY_LOW); 117 powerpc_setup_intr("power_button", irq, NULL, aeon_pbutton_intr, NULL, 118 INTR_TYPE_MISC, NULL, 0); 119 } 120 121 SYSINIT(aeon_setup_intr, SI_SUB_CONFIGURE, SI_ORDER_ANY, aeon_setup_intr, NULL); 122