/* * 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 . */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/module.h" #include "hw/cpu/a15mpcore.h" #include "hw/irq.h" #include "hw/qdev-properties.h" #include "sysemu/kvm.h" #include "kvm_arm.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); memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000); sysbus_init_mmio(sbd, &s->container); sysbus_init_child_obj(obj, "gic", &s->gic, sizeof(s->gic), gic_class_name()); qdev_prop_set_uint32(DEVICE(&s->gic), "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; bool has_el3; bool has_el2 = false; Object *cpuobj; gicdev = DEVICE(&s->gic); qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu); qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq); if (!kvm_irqchip_in_kernel()) { /* Make the GIC's TZ support match the CPUs. We assume that * either all the CPUs have TZ, or none do. */ cpuobj = OBJECT(qemu_get_cpu(0)); has_el3 = object_property_find(cpuobj, "has_el3", NULL) && object_property_get_bool(cpuobj, "has_el3", &error_abort); qdev_prop_set_bit(gicdev, "has-security-extensions", has_el3); /* Similarly for virtualization support */ has_el2 = object_property_find(cpuobj, "has_el2", NULL) && object_property_get_bool(cpuobj, "has_el2", &error_abort); qdev_prop_set_bit(gicdev, "has-virtualization-extensions", has_el2); } 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; int irq; /* Mapping from the output timer irq lines from the CPU to the * GIC PPI inputs used on the A15: */ const int timer_irq[] = { [GTIMER_PHYS] = 30, [GTIMER_VIRT] = 27, [GTIMER_HYP] = 26, [GTIMER_SEC] = 29, }; for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) { qdev_connect_gpio_out(cpudev, irq, qdev_get_gpio_in(gicdev, ppibase + timer_irq[irq])); } if (has_el2) { /* Connect the GIC maintenance interrupt to PPI ID 25 */ sysbus_connect_irq(SYS_BUS_DEVICE(gicdev), i + 4 * s->num_cpu, qdev_get_gpio_in(gicdev, ppibase + 25)); } } /* Memory map (addresses are offsets from PERIPHBASE): * 0x0000-0x0fff -- reserved * 0x1000-0x1fff -- GIC Distributor * 0x2000-0x3fff -- GIC CPU interface * 0x4000-0x4fff -- GIC virtual interface control for this CPU * 0x5000-0x51ff -- GIC virtual interface control for CPU 0 * 0x5200-0x53ff -- GIC virtual interface control for CPU 1 * 0x5400-0x55ff -- GIC virtual interface control for CPU 2 * 0x5600-0x57ff -- GIC virtual interface control for CPU 3 * 0x6000-0x7fff -- GIC virtual CPU interface */ 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)); if (has_el2) { memory_region_add_subregion(&s->container, 0x4000, sysbus_mmio_get_region(busdev, 2)); memory_region_add_subregion(&s->container, 0x6000, sysbus_mmio_get_region(busdev, 3)); for (i = 0; i < s->num_cpu; i++) { hwaddr base = 0x5000 + i * 0x200; MemoryRegion *mr = sysbus_mmio_get_region(busdev, 4 + s->num_cpu + i); memory_region_add_subregion(&s->container, base, mr); } } } 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)