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/*
* Raspberry Pi emulation (c) 2012 Gregory Estrade
* Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
*
* Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
* Written by Andrew Baumann
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "cpu.h"
#include "hw/arm/bcm2836.h"
#include "hw/arm/raspi_platform.h"
#include "hw/sysbus.h"
typedef struct BCM283XClass {
/*< private >*/
DeviceClass parent_class;
/*< public >*/
const char *name;
const char *cpu_type;
unsigned core_count;
hwaddr peri_base; /* Peripheral base address seen by the CPU */
hwaddr ctrl_base; /* Interrupt controller and mailboxes etc. */
int clusterid;
} BCM283XClass;
#define BCM283X_CLASS(klass) \
OBJECT_CLASS_CHECK(BCM283XClass, (klass), TYPE_BCM283X)
#define BCM283X_GET_CLASS(obj) \
OBJECT_GET_CLASS(BCM283XClass, (obj), TYPE_BCM283X)
static Property bcm2836_enabled_cores_property =
DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus, 0);
static void bcm2836_init(Object *obj)
{
BCM283XState *s = BCM283X(obj);
BCM283XClass *bc = BCM283X_GET_CLASS(obj);
int n;
for (n = 0; n < bc->core_count; n++) {
object_initialize_child(obj, "cpu[*]", &s->cpu[n].core,
bc->cpu_type);
}
if (bc->core_count > 1) {
qdev_property_add_static(DEVICE(obj), &bcm2836_enabled_cores_property);
qdev_prop_set_uint32(DEVICE(obj), "enabled-cpus", bc->core_count);
}
if (bc->ctrl_base) {
object_initialize_child(obj, "control", &s->control,
TYPE_BCM2836_CONTROL);
}
object_initialize_child(obj, "peripherals", &s->peripherals,
TYPE_BCM2835_PERIPHERALS);
object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals),
"board-rev");
object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals),
"vcram-size");
}
static bool bcm283x_common_realize(DeviceState *dev, Error **errp)
{
BCM283XState *s = BCM283X(dev);
BCM283XClass *bc = BCM283X_GET_CLASS(dev);
Object *obj;
/* common peripherals from bcm2835 */
obj = object_property_get_link(OBJECT(dev), "ram", &error_abort);
object_property_add_const_link(OBJECT(&s->peripherals), "ram", obj);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->peripherals), errp)) {
return false;
}
object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->peripherals),
"sd-bus");
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
bc->peri_base, 1);
return true;
}
static void bcm2835_realize(DeviceState *dev, Error **errp)
{
BCM283XState *s = BCM283X(dev);
if (!bcm283x_common_realize(dev, errp)) {
return;
}
if (!qdev_realize(DEVICE(&s->cpu[0].core), NULL, errp)) {
return;
}
/* Connect irq/fiq outputs from the interrupt controller. */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
qdev_get_gpio_in(DEVICE(&s->cpu[0].core), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
qdev_get_gpio_in(DEVICE(&s->cpu[0].core), ARM_CPU_FIQ));
}
static void bcm2836_realize(DeviceState *dev, Error **errp)
{
BCM283XState *s = BCM283X(dev);
BCM283XClass *bc = BCM283X_GET_CLASS(dev);
int n;
if (!bcm283x_common_realize(dev, errp)) {
return;
}
/* bcm2836 interrupt controller (and mailboxes, etc.) */
if (!sysbus_realize(SYS_BUS_DEVICE(&s->control), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, bc->ctrl_base);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-irq", 0));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-fiq", 0));
for (n = 0; n < BCM283X_NCPUS; n++) {
/* TODO: this should be converted to a property of ARM_CPU */
s->cpu[n].core.mp_affinity = (bc->clusterid << 8) | n;
/* set periphbase/CBAR value for CPU-local registers */
if (!object_property_set_int(OBJECT(&s->cpu[n].core), "reset-cbar",
bc->peri_base, errp)) {
return;
}
/* start powered off if not enabled */
if (!object_property_set_bool(OBJECT(&s->cpu[n].core),
"start-powered-off",
n >= s->enabled_cpus,
errp)) {
return;
}
if (!qdev_realize(DEVICE(&s->cpu[n].core), NULL, errp)) {
return;
}
/* Connect irq/fiq outputs from the interrupt controller. */
qdev_connect_gpio_out_named(DEVICE(&s->control), "irq", n,
qdev_get_gpio_in(DEVICE(&s->cpu[n].core), ARM_CPU_IRQ));
qdev_connect_gpio_out_named(DEVICE(&s->control), "fiq", n,
qdev_get_gpio_in(DEVICE(&s->cpu[n].core), ARM_CPU_FIQ));
/* Connect timers from the CPU to the interrupt controller */
qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_PHYS,
qdev_get_gpio_in_named(DEVICE(&s->control), "cntpnsirq", n));
qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_VIRT,
qdev_get_gpio_in_named(DEVICE(&s->control), "cntvirq", n));
qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_HYP,
qdev_get_gpio_in_named(DEVICE(&s->control), "cnthpirq", n));
qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_SEC,
qdev_get_gpio_in_named(DEVICE(&s->control), "cntpsirq", n));
}
}
static void bcm283x_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
/* Reason: Must be wired up in code (see raspi_init() function) */
dc->user_creatable = false;
}
static void bcm2835_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
BCM283XClass *bc = BCM283X_CLASS(oc);
bc->cpu_type = ARM_CPU_TYPE_NAME("arm1176");
bc->core_count = 1;
bc->peri_base = 0x20000000;
dc->realize = bcm2835_realize;
};
static void bcm2836_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
BCM283XClass *bc = BCM283X_CLASS(oc);
bc->cpu_type = ARM_CPU_TYPE_NAME("cortex-a7");
bc->core_count = BCM283X_NCPUS;
bc->peri_base = 0x3f000000;
bc->ctrl_base = 0x40000000;
bc->clusterid = 0xf;
dc->realize = bcm2836_realize;
};
#ifdef TARGET_AARCH64
static void bcm2837_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
BCM283XClass *bc = BCM283X_CLASS(oc);
bc->cpu_type = ARM_CPU_TYPE_NAME("cortex-a53");
bc->core_count = BCM283X_NCPUS;
bc->peri_base = 0x3f000000;
bc->ctrl_base = 0x40000000;
bc->clusterid = 0x0;
dc->realize = bcm2836_realize;
};
#endif
static const TypeInfo bcm283x_types[] = {
{
.name = TYPE_BCM2835,
.parent = TYPE_BCM283X,
.class_init = bcm2835_class_init,
}, {
.name = TYPE_BCM2836,
.parent = TYPE_BCM283X,
.class_init = bcm2836_class_init,
#ifdef TARGET_AARCH64
}, {
.name = TYPE_BCM2837,
.parent = TYPE_BCM283X,
.class_init = bcm2837_class_init,
#endif
}, {
.name = TYPE_BCM283X,
.parent = TYPE_DEVICE,
.instance_size = sizeof(BCM283XState),
.instance_init = bcm2836_init,
.class_size = sizeof(BCM283XClass),
.class_init = bcm283x_class_init,
.abstract = true,
}
};
DEFINE_TYPES(bcm283x_types)
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