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 __FBSDID("$FreeBSD$"); 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 #include <sys/malloc.h> 34 #include <sys/smp.h> 35 36 #include <machine/intr_machdep.h> 37 #include <machine/platform.h> 38 #include <machine/platformvar.h> 39 40 #include <dev/ofw/openfirm.h> 41 #include <dev/ofw/ofw_bus.h> 42 43 #include <powerpc/mpc85xx/mpc85xx.h> 44 45 #include "platform_if.h" 46 47 static void aeon_pbutton_intr(void *_unused); 48 static void aeon_setup_intr(void *unused); 49 50 static int aeon_probe(platform_t); 51 static int aeon_attach(platform_t); 52 53 static platform_method_t aeon_methods[] = { 54 PLATFORMMETHOD(platform_probe, aeon_probe), 55 PLATFORMMETHOD(platform_attach, aeon_attach), 56 PLATFORMMETHOD_END 57 }; 58 59 DEFINE_CLASS_1(aeon, aeon_platform, aeon_methods, 0, mpc85xx_platform); 60 61 PLATFORM_DEF(aeon_platform); 62 63 static bool is_aeon; 64 65 static int 66 aeon_probe(platform_t plat) 67 { 68 phandle_t rootnode; 69 char model[32]; 70 71 rootnode = OF_finddevice("/"); 72 73 if (OF_getprop(rootnode, "model", model, sizeof(model)) > 0) { 74 if (strncmp(model, "varisys,", strlen("varisys,")) == 0) 75 return (BUS_PROBE_SPECIFIC); 76 } 77 78 return (ENXIO); 79 } 80 81 static int 82 aeon_attach(platform_t plat) 83 { 84 int error; 85 86 error = mpc85xx_attach(plat); 87 if (error) 88 return (error); 89 90 is_aeon = true; 91 92 return (0); 93 } 94 95 /* Notify devd(8) that the power button was pressed (IRQ#4 on A-Eon machines). */ 96 static void 97 aeon_pbutton_intr(void *_unused) 98 { 99 devctl_notify("AEON", "power", "press", NULL); 100 } 101 102 /* Manually configure the power button IRQ handler. */ 103 static void 104 aeon_setup_intr(void *unused) 105 { 106 int irq; 107 108 if (!is_aeon) 109 return; 110 111 if (bootverbose) 112 printf("Configuring AmigaOne power button.\n"); 113 114 irq = 4; /* From TRM, IRQ4 is raised when power button is pressed. */ 115 116 /* Get us the root PIC. */ 117 irq = MAP_IRQ(0, irq); 118 powerpc_config_intr(irq, INTR_TRIGGER_EDGE, INTR_POLARITY_LOW); 119 powerpc_setup_intr("power_button", irq, NULL, aeon_pbutton_intr, NULL, 120 INTR_TYPE_MISC, NULL, 0); 121 } 122 123 SYSINIT(aeon_setup_intr, SI_SUB_CONFIGURE, SI_ORDER_ANY, aeon_setup_intr, NULL); 124