hw/arm/bcm2835.c

   1 #include "hw/arm/bcm2835.h"
   2 #include "hw/arm/raspi_platform.h"
   3 #include "hw/sysbus.h"
   4 #include "exec/address-spaces.h"
   5
   6 #define DEFAULT_VCRAM_SIZE 0x4000000
   7
   8 static void bcm2835_init(Object *obj)
   9 {
  10     BCM2835State *s = BCM2835(obj);
  11
  12     object_initialize(&s->cpu, sizeof(s->cpu), "arm1176-" TYPE_ARM_CPU);
  13     object_property_add_child(obj, "cpu", OBJECT(&s->cpu), &error_abort);
  14
  15     object_initialize(&s->peripherals, sizeof(s->peripherals),
  16                       TYPE_BCM2835_PERIPHERALS);
  17     object_property_add_child(obj, "peripherals", OBJECT(&s->peripherals),
  18                               &error_abort);
  19     qdev_set_parent_bus(DEVICE(&s->peripherals), sysbus_get_default());
  20 }
  21
  22 static void bcm2835_realize(DeviceState *dev, Error **errp)
  23 {
  24     BCM2835State *s = BCM2835(dev);
  25     Error *err = NULL;
  26
  27     /* common peripherals from bcm2835 */
  28     object_property_set_bool(OBJECT(&s->peripherals), true, "realized", &err);
  29     if (err) {
  30         error_propagate(errp, err);
  31         return;
  32     }
  33
  34     sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
  35                             BCM2835_PERI_BASE, 1);
  36
  37     object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  38     if (err) {
  39         error_report_err(err);
  40         exit(1);
  41     }
  42
  43     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
  44                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  45     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
  46                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  47
  48 }
  49
  50 static Property bcm2835_props[] = {
  51     DEFINE_PROP_SIZE("vcram-size", BCM2835State, vcram_size, DEFAULT_VCRAM_SIZE),
  52     DEFINE_PROP_END_OF_LIST()
  53 };
  54
  55 static void bcm2835_class_init(ObjectClass *oc, void *data)
  56 {
  57     DeviceClass *dc = DEVICE_CLASS(oc);
  58
  59     dc->props = bcm2835_props;
  60     dc->realize = bcm2835_realize;
  61
  62     /*
  63      * Reason: creates an ARM CPU, thus use after free(), see
  64      * arm_cpu_class_init()
  65      */
  66     dc->cannot_destroy_with_object_finalize_yet = true;
  67 }
  68
  69 static const TypeInfo bcm2835_type_info = {
  70     .name = TYPE_BCM2835,
  71     .parent = TYPE_SYS_BUS_DEVICE,
  72     .instance_size = sizeof(BCM2835State),
  73     .instance_init = bcm2835_init,
  74     .class_init = bcm2835_class_init,
  75 };
  76
  77 static void bcm2835_register_types(void)
  78 {
  79     type_register_static(&bcm2835_type_info);
  80 }
  81
  82 type_init(bcm2835_register_types)