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 "qemu/osdep.h" 24 #include "qapi/error.h" 25 #include "qemu/module.h" 26 #include "hw/arm/digic.h" 27 #include "hw/qdev-properties.h" 28 #include "sysemu/sysemu.h" 29 30 #define DIGIC4_TIMER_BASE(n) (0xc0210000 + (n) * 0x100) 31 32 #define DIGIC_UART_BASE 0xc0800000 33 34 static void digic_init(Object *obj) 35 { 36 DigicState *s = DIGIC(obj); 37 int i; 38 39 object_initialize_child(obj, "cpu", &s->cpu, sizeof(s->cpu), 40 ARM_CPU_TYPE_NAME("arm946"), 41 &error_abort, NULL); 42 43 for (i = 0; i < DIGIC4_NB_TIMERS; i++) { 44 #define DIGIC_TIMER_NAME_MLEN 11 45 char name[DIGIC_TIMER_NAME_MLEN]; 46 47 snprintf(name, DIGIC_TIMER_NAME_MLEN, "timer[%d]", i); 48 sysbus_init_child_obj(obj, name, &s->timer[i], sizeof(s->timer[i]), 49 TYPE_DIGIC_TIMER); 50 } 51 52 sysbus_init_child_obj(obj, "uart", &s->uart, sizeof(s->uart), 53 TYPE_DIGIC_UART); 54 } 55 56 static void digic_realize(DeviceState *dev, Error **errp) 57 { 58 DigicState *s = DIGIC(dev); 59 Error *err = NULL; 60 SysBusDevice *sbd; 61 int i; 62 63 object_property_set_bool(OBJECT(&s->cpu), true, "reset-hivecs", &err); 64 if (err != NULL) { 65 error_propagate(errp, err); 66 return; 67 } 68 69 object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err); 70 if (err != NULL) { 71 error_propagate(errp, err); 72 return; 73 } 74 75 for (i = 0; i < DIGIC4_NB_TIMERS; i++) { 76 object_property_set_bool(OBJECT(&s->timer[i]), true, "realized", &err); 77 if (err != NULL) { 78 error_propagate(errp, err); 79 return; 80 } 81 82 sbd = SYS_BUS_DEVICE(&s->timer[i]); 83 sysbus_mmio_map(sbd, 0, DIGIC4_TIMER_BASE(i)); 84 } 85 86 qdev_prop_set_chr(DEVICE(&s->uart), "chardev", serial_hd(0)); 87 object_property_set_bool(OBJECT(&s->uart), true, "realized", &err); 88 if (err != NULL) { 89 error_propagate(errp, err); 90 return; 91 } 92 93 sbd = SYS_BUS_DEVICE(&s->uart); 94 sysbus_mmio_map(sbd, 0, DIGIC_UART_BASE); 95 } 96 97 static void digic_class_init(ObjectClass *oc, void *data) 98 { 99 DeviceClass *dc = DEVICE_CLASS(oc); 100 101 dc->realize = digic_realize; 102 /* Reason: Uses serial_hds in the realize function --> not usable twice */ 103 dc->user_creatable = false; 104 } 105 106 static const TypeInfo digic_type_info = { 107 .name = TYPE_DIGIC, 108 .parent = TYPE_DEVICE, 109 .instance_size = sizeof(DigicState), 110 .instance_init = digic_init, 111 .class_init = digic_class_init, 112 }; 113 114 static void digic_register_types(void) 115 { 116 type_register_static(&digic_type_info); 117 } 118 119 type_init(digic_register_types) 120