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 #define DEFAULT_VCRAM_SIZE 0x4000000
  17
  18 static void bcm2835_init(Object *obj)
  19 {
  20     BCM2835State *s = BCM2835(obj);
  21
  22     object_initialize(&s->cpu, sizeof(s->cpu), "arm1176-" TYPE_ARM_CPU);
  23     object_property_add_child(obj, "cpu", OBJECT(&s->cpu), &error_abort);
  24
  25     object_initialize(&s->peripherals, sizeof(s->peripherals),
  26                       TYPE_BCM2835_PERIPHERALS);
  27     object_property_add_child(obj, "peripherals", OBJECT(&s->peripherals),
  28                               &error_abort);
  29     qdev_set_parent_bus(DEVICE(&s->peripherals), sysbus_get_default());
  30 }
  31
  32 static void bcm2835_realize(DeviceState *dev, Error **errp)
  33 {
  34     BCM2835State *s = BCM2835(dev);
  35     Error *err = NULL;
  36
  37     /* common peripherals from bcm2835 */
  38     object_property_set_bool(OBJECT(&s->peripherals), true, "realized", &err);
  39     if (err) {
  40         error_propagate(errp, err);
  41         return;
  42     }
  43
  44     sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
  45                             BCM2835_PERI_BASE, 1);
  46
  47     object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  48     if (err) {
  49         error_report_err(err);
  50         exit(1);
  51     }
  52
  53     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
  54                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  55     sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
  56                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  57
  58 }
  59
  60 static Property bcm2835_props[] = {
  61     DEFINE_PROP_UINT32("vcram-size", BCM2835State, vcram_size, 0),
  62     DEFINE_PROP_END_OF_LIST()
  63 };
  64
  65 static void bcm2835_class_init(ObjectClass *oc, void *data)
  66 {
  67     DeviceClass *dc = DEVICE_CLASS(oc);
  68
  69     dc->props = bcm2835_props;
  70     dc->realize = bcm2835_realize;
  71
  72     /*
  73      * Reason: creates an ARM CPU, thus use after free(), see
  74      * arm_cpu_class_init()
  75      */
  76     dc->cannot_destroy_with_object_finalize_yet = true;
  77 }
  78
  79 static const TypeInfo bcm2835_type_info = {
  80     .name = TYPE_BCM2835,
  81     .parent = TYPE_SYS_BUS_DEVICE,
  82     .instance_size = sizeof(BCM2835State),
  83     .instance_init = bcm2835_init,
  84     .class_init = bcm2835_class_init,
  85 };
  86
  87 static void bcm2835_register_types(void)
  88 {
  89     type_register_static(&bcm2835_type_info);
  90 }
  91
  92 type_init(bcm2835_register_types)