1 /* 2 * QEMU model of the Canon DIGIC SoC. 3 * 4 * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com> 5 * 6 * This model is based on reverse engineering efforts 7 * made by CHDK (http://chdk.wikia.com) and 8 * Magic Lantern (http://www.magiclantern.fm) projects 9 * contributors. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 */ 22 23 #include "hw/arm/digic.h" 24 25 #define DIGIC4_TIMER_BASE(n) (0xc0210000 + (n) * 0x100) 26 27 static void digic_init(Object *obj) 28 { 29 DigicState *s = DIGIC(obj); 30 DeviceState *dev; 31 int i; 32 33 object_initialize(&s->cpu, sizeof(s->cpu), "arm946-" TYPE_ARM_CPU); 34 object_property_add_child(obj, "cpu", OBJECT(&s->cpu), NULL); 35 36 for (i = 0; i < DIGIC4_NB_TIMERS; i++) { 37 #define DIGIC_TIMER_NAME_MLEN 11 38 char name[DIGIC_TIMER_NAME_MLEN]; 39 40 object_initialize(&s->timer[i], sizeof(s->timer[i]), TYPE_DIGIC_TIMER); 41 dev = DEVICE(&s->timer[i]); 42 qdev_set_parent_bus(dev, sysbus_get_default()); 43 snprintf(name, DIGIC_TIMER_NAME_MLEN, "timer[%d]", i); 44 object_property_add_child(obj, name, OBJECT(&s->timer[i]), NULL); 45 } 46 } 47 48 static void digic_realize(DeviceState *dev, Error **errp) 49 { 50 DigicState *s = DIGIC(dev); 51 Error *err = NULL; 52 SysBusDevice *sbd; 53 int i; 54 55 object_property_set_bool(OBJECT(&s->cpu), true, "reset-hivecs", &err); 56 if (err != NULL) { 57 error_propagate(errp, err); 58 return; 59 } 60 61 object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err); 62 if (err != NULL) { 63 error_propagate(errp, err); 64 return; 65 } 66 67 for (i = 0; i < DIGIC4_NB_TIMERS; i++) { 68 object_property_set_bool(OBJECT(&s->timer[i]), true, "realized", &err); 69 if (err != NULL) { 70 error_propagate(errp, err); 71 return; 72 } 73 74 sbd = SYS_BUS_DEVICE(&s->timer[i]); 75 sysbus_mmio_map(sbd, 0, DIGIC4_TIMER_BASE(i)); 76 } 77 } 78 79 static void digic_class_init(ObjectClass *oc, void *data) 80 { 81 DeviceClass *dc = DEVICE_CLASS(oc); 82 83 dc->realize = digic_realize; 84 } 85 86 static const TypeInfo digic_type_info = { 87 .name = TYPE_DIGIC, 88 .parent = TYPE_DEVICE, 89 .instance_size = sizeof(DigicState), 90 .instance_init = digic_init, 91 .class_init = digic_class_init, 92 }; 93 94 static void digic_register_types(void) 95 { 96 type_register_static(&digic_type_info); 97 } 98 99 type_init(digic_register_types) 100