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/*
* Cortex-A15MPCore internal peripheral emulation.
*
* Copyright (c) 2012 Linaro Limited.
* Written by Peter Maydell.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw/cpu/a15mpcore.h"
#include "sysemu/kvm.h"
static void a15mp_priv_set_irq(void *opaque, int irq, int level)
{
A15MPPrivState *s = (A15MPPrivState *)opaque;
qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
}
static void a15mp_priv_initfn(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
A15MPPrivState *s = A15MPCORE_PRIV(obj);
DeviceState *gicdev;
const char *gictype = "arm_gic";
if (kvm_irqchip_in_kernel()) {
gictype = "kvm-arm-gic";
}
memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000);
sysbus_init_mmio(sbd, &s->container);
object_initialize(&s->gic, sizeof(s->gic), gictype);
gicdev = DEVICE(&s->gic);
qdev_set_parent_bus(gicdev, sysbus_get_default());
qdev_prop_set_uint32(gicdev, "revision", 2);
}
static void a15mp_priv_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
A15MPPrivState *s = A15MPCORE_PRIV(dev);
DeviceState *gicdev;
SysBusDevice *busdev;
int i;
Error *err = NULL;
gicdev = DEVICE(&s->gic);
qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
busdev = SYS_BUS_DEVICE(&s->gic);
/* Pass through outbound IRQ lines from the GIC */
sysbus_pass_irq(sbd, busdev);
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, a15mp_priv_set_irq, s->num_irq - 32);
/* Wire the outputs from each CPU's generic timer to the
* appropriate GIC PPI inputs
*/
for (i = 0; i < s->num_cpu; i++) {
DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
int ppibase = s->num_irq - 32 + i * 32;
/* physical timer; we wire it up to the non-secure timer's ID,
* since a real A15 always has TrustZone but QEMU doesn't.
*/
qdev_connect_gpio_out(cpudev, 0,
qdev_get_gpio_in(gicdev, ppibase + 30));
/* virtual timer */
qdev_connect_gpio_out(cpudev, 1,
qdev_get_gpio_in(gicdev, ppibase + 27));
}
/* Memory map (addresses are offsets from PERIPHBASE):
* 0x0000-0x0fff -- reserved
* 0x1000-0x1fff -- GIC Distributor
* 0x2000-0x2fff -- GIC CPU interface
* 0x4000-0x4fff -- GIC virtual interface control (not modelled)
* 0x5000-0x5fff -- GIC virtual interface control (not modelled)
* 0x6000-0x7fff -- GIC virtual CPU interface (not modelled)
*/
memory_region_add_subregion(&s->container, 0x1000,
sysbus_mmio_get_region(busdev, 0));
memory_region_add_subregion(&s->container, 0x2000,
sysbus_mmio_get_region(busdev, 1));
}
static Property a15mp_priv_properties[] = {
DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1),
/* The Cortex-A15MP may have anything from 0 to 224 external interrupt
* IRQ lines (with another 32 internal). We default to 128+32, which
* is the number provided by the Cortex-A15MP test chip in the
* Versatile Express A15 development board.
* Other boards may differ and should set this property appropriately.
*/
DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 160),
DEFINE_PROP_END_OF_LIST(),
};
static void a15mp_priv_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = a15mp_priv_realize;
dc->props = a15mp_priv_properties;
/* We currently have no savable state */
}
static const TypeInfo a15mp_priv_info = {
.name = TYPE_A15MPCORE_PRIV,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(A15MPPrivState),
.instance_init = a15mp_priv_initfn,
.class_init = a15mp_priv_class_init,
};
static void a15mp_register_types(void)
{
type_register_static(&a15mp_priv_info);
}
type_init(a15mp_register_types)
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