hw/arm/bcm2835.c

   1 /*
   2  * Raspberry Pi emulation (c) 2012 Gregory Estrade
   3  * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
   4  *
   5  * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
   6  * Written by Andrew Baumann
   7  *
   8  * This code is licensed under the GNU GPLv2 and later.
   9  */
  10
  11 #include "hw/arm/bcm2835.h"
  12 #include "hw/arm/raspi_platform.h"
  13 #include "hw/sysbus.h"
  14 #include "exec/address-spaces.h"
  15
  16 static void bcm2835_init(Object *obj)
  17 {
  18     BCM2835State *s = BCM2835(obj);
  19
  20     object_initialize(&s->cpu, sizeof(s->cpu), "arm1176-" TYPE_ARM_CPU);
  21     object_property_add_child(obj, "cpu", OBJECT(&s->cpu), &error_abort);
  22
  23     object_initialize(&s->peripherals, sizeof(s->peripherals),
  24                       TYPE_BCM2835_PERIPHERALS);
  25     object_property_add_child(obj, "peripherals", OBJECT(&s->peripherals),
  26                               &error_abort);
  27     qdev_set_parent_bus(DEVICE(&s->peripherals), sysbus_get_default());
  28 }
  29
  30 static void bcm2835_realize(DeviceState *dev, Error **errp)
  31 {
  32     BCM2835State *s = BCM2835(dev);
  33     Error *err = NULL;
  34
  35     /* common peripherals from bcm2835 */
  36     object_property_set_int(OBJECT(&s->peripherals), s->vcram_size,
  37                             "vcram-size", &err);
  38     if (err) {
  39         error_propagate(errp, err);
  40         return;
  41     }
  42
  43     object_property_set_bool(OBJECT(&s->peripherals), true, "realized", &err);
  44     if (err) {
  45         error_propagate(errp, err);
  46         return;
  47     }
  48
  49     sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
  50                             BCM2835_PERI_BASE, 1);
  51
  52     object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  53     if (err) {
  54         error_report_err(err);
  55         exit(1);
  56     }
  57
  58     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
  59                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  60     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
  61                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  62
  63 }
  64
  65 static Property bcm2835_props[] = {
  66     DEFINE_PROP_UINT32("vcram-size", BCM2835State, vcram_size, 0),
  67     DEFINE_PROP_END_OF_LIST()
  68 };
  69
  70 static void bcm2835_class_init(ObjectClass *oc, void *data)
  71 {
  72     DeviceClass *dc = DEVICE_CLASS(oc);
  73
  74     dc->props = bcm2835_props;
  75     dc->realize = bcm2835_realize;
  76
  77     /*
  78      * Reason: creates an ARM CPU, thus use after free(), see
  79      * arm_cpu_class_init()
  80      */
  81     dc->cannot_destroy_with_object_finalize_yet = true;
  82 }
  83
  84 static const TypeInfo bcm2835_type_info = {
  85     .name = TYPE_BCM2835,
  86     .parent = TYPE_SYS_BUS_DEVICE,
  87     .instance_size = sizeof(BCM2835State),
  88     .instance_init = bcm2835_init,
  89     .class_init = bcm2835_class_init,
  90 };
  91
  92 static void bcm2835_register_types(void)
  93 {
  94     type_register_static(&bcm2835_type_info);
  95 }
  96
  97 type_init(bcm2835_register_types)