qemu-e2k/hw/arm/bcm2836.c

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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 code is licensed under the GNU GPLv2 and later.
*/
#include "qemu/osdep.h"
2016-03-14 09:01:28 +01:00
#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"
struct BCM283XInfo {
const char *name;
const char *cpu_type;
hwaddr peri_base; /* Peripheral base address seen by the CPU */
hwaddr ctrl_base; /* Interrupt controller and mailboxes etc. */
int clusterid;
};
static const BCM283XInfo bcm283x_socs[] = {
{
.name = TYPE_BCM2836,
.cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"),
.peri_base = 0x3f000000,
.ctrl_base = 0x40000000,
.clusterid = 0xf,
},
#ifdef TARGET_AARCH64
{
.name = TYPE_BCM2837,
.cpu_type = ARM_CPU_TYPE_NAME("cortex-a53"),
.peri_base = 0x3f000000,
.ctrl_base = 0x40000000,
.clusterid = 0x0,
},
#endif
};
static void bcm2836_init(Object *obj)
{
BCM283XState *s = BCM283X(obj);
BCM283XClass *bc = BCM283X_GET_CLASS(obj);
const BCM283XInfo *info = bc->info;
int n;
for (n = 0; n < BCM283X_NCPUS; n++) {
object_initialize_child(obj, "cpu[*]", &s->cpu[n].core,
sizeof(s->cpu[n].core), info->cpu_type,
&error_abort, NULL);
}
hw/arm/bcm2836: Fix crash with device_add bcm2837 on unsupported machines When trying to "device_add bcm2837" on a machine that is not suitable for this device, you can quickly crash QEMU afterwards, e.g. with "info qtree": echo "{'execute':'qmp_capabilities'} {'execute':'device_add', " \ "'arguments':{'driver':'bcm2837'}} {'execute': 'human-monitor-command', " \ "'arguments': {'command-line': 'info qtree'}}" | \ aarch64-softmmu/qemu-system-aarch64 -M integratorcp,accel=qtest -S -qmp stdio {"QMP": {"version": {"qemu": {"micro": 50, "minor": 12, "major": 2}, "package": "build-all"}, "capabilities": []}} {"return": {}} {"error": {"class": "GenericError", "desc": "Device 'bcm2837' can not be hotplugged on this machine"}} Segmentation fault (core dumped) The qdev_set_parent_bus() from instance_init adds a link to the child devices which is not valid anymore after the bcm2837 instance has been destroyed. Unfortunately, the child devices do not get destroyed / unlinked correctly because both object_initialize() and object_property_add_child() increase the reference count of the child objects by one, but only one reference is dropped when the parent gets removed. So let's use the new functions object_initialize_child() and sysbus_init_child_obj() instead to create the objects, which will take care of creating the child objects with the correct reference count of one. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-id: 1531745974-17187-4-git-send-email-thuth@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-07-16 14:59:20 +02:00
sysbus_init_child_obj(obj, "control", &s->control, sizeof(s->control),
TYPE_BCM2836_CONTROL);
hw/arm/bcm2836: Fix crash with device_add bcm2837 on unsupported machines When trying to "device_add bcm2837" on a machine that is not suitable for this device, you can quickly crash QEMU afterwards, e.g. with "info qtree": echo "{'execute':'qmp_capabilities'} {'execute':'device_add', " \ "'arguments':{'driver':'bcm2837'}} {'execute': 'human-monitor-command', " \ "'arguments': {'command-line': 'info qtree'}}" | \ aarch64-softmmu/qemu-system-aarch64 -M integratorcp,accel=qtest -S -qmp stdio {"QMP": {"version": {"qemu": {"micro": 50, "minor": 12, "major": 2}, "package": "build-all"}, "capabilities": []}} {"return": {}} {"error": {"class": "GenericError", "desc": "Device 'bcm2837' can not be hotplugged on this machine"}} Segmentation fault (core dumped) The qdev_set_parent_bus() from instance_init adds a link to the child devices which is not valid anymore after the bcm2837 instance has been destroyed. Unfortunately, the child devices do not get destroyed / unlinked correctly because both object_initialize() and object_property_add_child() increase the reference count of the child objects by one, but only one reference is dropped when the parent gets removed. So let's use the new functions object_initialize_child() and sysbus_init_child_obj() instead to create the objects, which will take care of creating the child objects with the correct reference count of one. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-id: 1531745974-17187-4-git-send-email-thuth@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-07-16 14:59:20 +02:00
sysbus_init_child_obj(obj, "peripherals", &s->peripherals,
sizeof(s->peripherals), TYPE_BCM2835_PERIPHERALS);
object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals),
"board-rev", &error_abort);
object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals),
"vcram-size", &error_abort);
}
static void bcm2836_realize(DeviceState *dev, Error **errp)
{
BCM283XState *s = BCM283X(dev);
BCM283XClass *bc = BCM283X_GET_CLASS(dev);
const BCM283XInfo *info = bc->info;
Object *obj;
Error *err = NULL;
int n;
/* common peripherals from bcm2835 */
obj = object_property_get_link(OBJECT(dev), "ram", &err);
if (obj == NULL) {
error_setg(errp, "%s: required ram link not found: %s",
__func__, error_get_pretty(err));
return;
}
object_property_add_const_link(OBJECT(&s->peripherals), "ram", obj, &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_bool(OBJECT(&s->peripherals), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->peripherals),
"sd-bus", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
info->peri_base, 1);
/* bcm2836 interrupt controller (and mailboxes, etc.) */
object_property_set_bool(OBJECT(&s->control), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, info->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 = (info->clusterid << 8) | n;
/* set periphbase/CBAR value for CPU-local registers */
object_property_set_int(OBJECT(&s->cpu[n].core),
info->peri_base,
"reset-cbar", &err);
if (err) {
error_propagate(errp, err);
return;
}
/* start powered off if not enabled */
object_property_set_bool(OBJECT(&s->cpu[n].core), n >= s->enabled_cpus,
"start-powered-off", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_bool(OBJECT(&s->cpu[n].core), true,
"realized", &err);
if (err) {
error_propagate(errp, err);
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 Property bcm2836_props[] = {
DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus,
BCM283X_NCPUS),
DEFINE_PROP_END_OF_LIST()
};
static void bcm283x_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
BCM283XClass *bc = BCM283X_CLASS(oc);
bc->info = data;
dc->realize = bcm2836_realize;
device_class_set_props(dc, bcm2836_props);
/* Reason: Must be wired up in code (see raspi_init() function) */
dc->user_creatable = false;
}
static const TypeInfo bcm283x_type_info = {
.name = TYPE_BCM283X,
.parent = TYPE_DEVICE,
.instance_size = sizeof(BCM283XState),
.instance_init = bcm2836_init,
.class_size = sizeof(BCM283XClass),
.abstract = true,
};
static void bcm2836_register_types(void)
{
int i;
type_register_static(&bcm283x_type_info);
for (i = 0; i < ARRAY_SIZE(bcm283x_socs); i++) {
TypeInfo ti = {
.name = bcm283x_socs[i].name,
.parent = TYPE_BCM283X,
.class_init = bcm283x_class_init,
.class_data = (void *) &bcm283x_socs[i],
};
type_register(&ti);
}
}
type_init(bcm2836_register_types)