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/*
* ARM11MPCore internal peripheral emulation.
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/cpu/arm11mpcore.h"
#include "hw/intc/realview_gic.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#define ARM11MPCORE_NUM_GIC_PRIORITY_BITS 4
static void mpcore_priv_set_irq(void *opaque, int irq, int level)
{
ARM11MPCorePriveState *s = (ARM11MPCorePriveState *)opaque;
qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
}
static void mpcore_priv_map_setup(ARM11MPCorePriveState *s)
{
int i;
SysBusDevice *scubusdev = SYS_BUS_DEVICE(&s->scu);
DeviceState *gicdev = DEVICE(&s->gic);
SysBusDevice *gicbusdev = SYS_BUS_DEVICE(&s->gic);
SysBusDevice *timerbusdev = SYS_BUS_DEVICE(&s->mptimer);
SysBusDevice *wdtbusdev = SYS_BUS_DEVICE(&s->wdtimer);
memory_region_add_subregion(&s->container, 0,
sysbus_mmio_get_region(scubusdev, 0));
/* GIC CPU interfaces: "current CPU" at 0x100, then specific CPUs
* at 0x200, 0x300...
*/
for (i = 0; i < (s->num_cpu + 1); i++) {
hwaddr offset = 0x100 + (i * 0x100);
memory_region_add_subregion(&s->container, offset,
sysbus_mmio_get_region(gicbusdev, i + 1));
}
/* Add the regions for timer and watchdog for "current CPU" and
* for each specific CPU.
*/
for (i = 0; i < (s->num_cpu + 1); i++) {
/* Timers at 0x600, 0x700, ...; watchdogs at 0x620, 0x720, ... */
hwaddr offset = 0x600 + i * 0x100;
memory_region_add_subregion(&s->container, offset,
sysbus_mmio_get_region(timerbusdev, i));
memory_region_add_subregion(&s->container, offset + 0x20,
sysbus_mmio_get_region(wdtbusdev, i));
}
memory_region_add_subregion(&s->container, 0x1000,
sysbus_mmio_get_region(gicbusdev, 0));
/* Wire up the interrupt from each watchdog and timer.
* For each core the timer is PPI 29 and the watchdog PPI 30.
*/
for (i = 0; i < s->num_cpu; i++) {
int ppibase = (s->num_irq - 32) + i * 32;
sysbus_connect_irq(timerbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 29));
sysbus_connect_irq(wdtbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 30));
}
}
static void mpcore_priv_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
ARM11MPCorePriveState *s = ARM11MPCORE_PRIV(dev);
DeviceState *scudev = DEVICE(&s->scu);
DeviceState *gicdev = DEVICE(&s->gic);
DeviceState *mptimerdev = DEVICE(&s->mptimer);
DeviceState *wdtimerdev = DEVICE(&s->wdtimer);
qdev_prop_set_uint32(scudev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
return;
}
qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
qdev_prop_set_uint32(gicdev, "num-priority-bits",
ARM11MPCORE_NUM_GIC_PRIORITY_BITS);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
return;
}
/* Pass through outbound IRQ lines from the GIC */
sysbus_pass_irq(sbd, SYS_BUS_DEVICE(&s->gic));
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, mpcore_priv_set_irq, s->num_irq - 32);
qdev_prop_set_uint32(mptimerdev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->mptimer), errp)) {
return;
}
qdev_prop_set_uint32(wdtimerdev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->wdtimer), errp)) {
return;
}
mpcore_priv_map_setup(s);
}
static void mpcore_priv_initfn(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
ARM11MPCorePriveState *s = ARM11MPCORE_PRIV(obj);
memory_region_init(&s->container, OBJECT(s),
"mpcore-priv-container", 0x2000);
sysbus_init_mmio(sbd, &s->container);
object_initialize_child(obj, "scu", &s->scu, TYPE_ARM11_SCU);
object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC);
/* Request the legacy 11MPCore GIC behaviour: */
qdev_prop_set_uint32(DEVICE(&s->gic), "revision", 0);
object_initialize_child(obj, "mptimer", &s->mptimer, TYPE_ARM_MPTIMER);
object_initialize_child(obj, "wdtimer", &s->wdtimer, TYPE_ARM_MPTIMER);
}
static const Property mpcore_priv_properties[] = {
DEFINE_PROP_UINT32("num-cpu", ARM11MPCorePriveState, num_cpu, 1),
/* The ARM11 MPCORE TRM says the on-chip controller may have
* anything from 0 to 224 external interrupt IRQ lines (with another
* 32 internal). We default to 32+32, which is the number provided by
* the ARM11 MPCore test chip in the Realview Versatile Express
* coretile. Other boards may differ and should set this property
* appropriately. Some Linux kernels may not boot if the hardware
* has more IRQ lines than the kernel expects.
*/
DEFINE_PROP_UINT32("num-irq", ARM11MPCorePriveState, num_irq, 64),
};
static void mpcore_priv_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = mpcore_priv_realize;
device_class_set_props(dc, mpcore_priv_properties);
}
static const TypeInfo arm11mp_types[] = {
{
.name = TYPE_ARM11MPCORE_PRIV,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(ARM11MPCorePriveState),
.instance_init = mpcore_priv_initfn,
.class_init = mpcore_priv_class_init,
},
};
DEFINE_TYPES(arm11mp_types)
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