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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 "sysbus.h"
/* Configuration for arm_gic.c:
* max number of CPUs, how to ID current CPU
*/
#define NCPU 4
static inline int gic_get_current_cpu(void)
{
return cpu_single_env->cpu_index;
}
#include "arm_gic.c"
/* A15MP private memory region. */
typedef struct A15MPPrivState {
gic_state gic;
uint32_t num_cpu;
uint32_t num_irq;
MemoryRegion container;
} A15MPPrivState;
static int a15mp_priv_init(SysBusDevice *dev)
{
A15MPPrivState *s = FROM_SYSBUSGIC(A15MPPrivState, dev);
if (s->num_cpu > NCPU) {
hw_error("a15mp_priv_init: num-cpu may not be more than %d\n", NCPU);
}
gic_init(&s->gic, s->num_cpu, s->num_irq);
/* 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_init(&s->container, "a15mp-priv-container", 0x8000);
memory_region_add_subregion(&s->container, 0x1000, &s->gic.iomem);
memory_region_add_subregion(&s->container, 0x2000, &s->gic.cpuiomem[0]);
sysbus_init_mmio(dev, &s->container);
return 0;
}
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 64+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, 96),
DEFINE_PROP_END_OF_LIST(),
};
static void a15mp_priv_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = a15mp_priv_init;
dc->props = a15mp_priv_properties;
/* We currently have no savable state outside the common GIC state */
}
static TypeInfo a15mp_priv_info = {
.name = "a15mpcore_priv",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(A15MPPrivState),
.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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