/* * 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" /* A15MP private memory region. */ typedef struct A15MPPrivState { SysBusDevice busdev; uint32_t num_cpu; uint32_t num_irq; MemoryRegion container; DeviceState *gic; } A15MPPrivState; static void a15mp_priv_set_irq(void *opaque, int irq, int level) { A15MPPrivState *s = (A15MPPrivState *)opaque; qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level); } static int a15mp_priv_init(SysBusDevice *dev) { A15MPPrivState *s = FROM_SYSBUS(A15MPPrivState, dev); SysBusDevice *busdev; s->gic = qdev_create(NULL, "arm_gic"); qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu); qdev_prop_set_uint32(s->gic, "num-irq", s->num_irq); qdev_init_nofail(s->gic); busdev = sysbus_from_qdev(s->gic); /* Pass through outbound IRQ lines from the GIC */ sysbus_pass_irq(dev, busdev); /* Pass through inbound GPIO lines to the GIC */ qdev_init_gpio_in(&s->busdev.qdev, a15mp_priv_set_irq, s->num_irq - 32); /* 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, sysbus_mmio_get_region(busdev, 0)); memory_region_add_subregion(&s->container, 0x2000, sysbus_mmio_get_region(busdev, 1)); 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 */ } 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)