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