2 * Cortex-A15MPCore internal peripheral emulation.
4 * Copyright (c) 2012 Linaro Limited.
5 * Written by Peter Maydell.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "hw/sysbus.h"
22 #include "sysemu/kvm.h"
23 #include "hw/intc/arm_gic.h"
25 /* A15MP private memory region. */
27 #define TYPE_A15MPCORE_PRIV "a15mpcore_priv"
28 #define A15MPCORE_PRIV(obj) \
29 OBJECT_CHECK(A15MPPrivState, (obj), TYPE_A15MPCORE_PRIV)
31 typedef struct A15MPPrivState {
33 SysBusDevice parent_obj;
38 MemoryRegion container;
43 static void a15mp_priv_set_irq(void *opaque, int irq, int level)
45 A15MPPrivState *s = (A15MPPrivState *)opaque;
47 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
50 static void a15mp_priv_initfn(Object *obj)
52 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
53 A15MPPrivState *s = A15MPCORE_PRIV(obj);
55 const char *gictype = "arm_gic";
57 if (kvm_irqchip_in_kernel()) {
58 gictype = "kvm-arm-gic";
61 memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000);
62 sysbus_init_mmio(sbd, &s->container);
64 object_initialize(&s->gic, sizeof(s->gic), gictype);
65 gicdev = DEVICE(&s->gic);
66 qdev_set_parent_bus(gicdev, sysbus_get_default());
67 qdev_prop_set_uint32(gicdev, "revision", 2);
70 static void a15mp_priv_realize(DeviceState *dev, Error **errp)
72 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
73 A15MPPrivState *s = A15MPCORE_PRIV(dev);
79 gicdev = DEVICE(&s->gic);
80 qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
81 qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
82 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
84 error_propagate(errp, err);
87 busdev = SYS_BUS_DEVICE(&s->gic);
89 /* Pass through outbound IRQ lines from the GIC */
90 sysbus_pass_irq(sbd, busdev);
92 /* Pass through inbound GPIO lines to the GIC */
93 qdev_init_gpio_in(dev, a15mp_priv_set_irq, s->num_irq - 32);
95 /* Wire the outputs from each CPU's generic timer to the
96 * appropriate GIC PPI inputs
98 for (i = 0; i < s->num_cpu; i++) {
99 DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
100 int ppibase = s->num_irq - 32 + i * 32;
101 /* physical timer; we wire it up to the non-secure timer's ID,
102 * since a real A15 always has TrustZone but QEMU doesn't.
104 qdev_connect_gpio_out(cpudev, 0,
105 qdev_get_gpio_in(gicdev, ppibase + 30));
107 qdev_connect_gpio_out(cpudev, 1,
108 qdev_get_gpio_in(gicdev, ppibase + 27));
111 /* Memory map (addresses are offsets from PERIPHBASE):
112 * 0x0000-0x0fff -- reserved
113 * 0x1000-0x1fff -- GIC Distributor
114 * 0x2000-0x2fff -- GIC CPU interface
115 * 0x4000-0x4fff -- GIC virtual interface control (not modelled)
116 * 0x5000-0x5fff -- GIC virtual interface control (not modelled)
117 * 0x6000-0x7fff -- GIC virtual CPU interface (not modelled)
119 memory_region_add_subregion(&s->container, 0x1000,
120 sysbus_mmio_get_region(busdev, 0));
121 memory_region_add_subregion(&s->container, 0x2000,
122 sysbus_mmio_get_region(busdev, 1));
125 static Property a15mp_priv_properties[] = {
126 DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1),
127 /* The Cortex-A15MP may have anything from 0 to 224 external interrupt
128 * IRQ lines (with another 32 internal). We default to 128+32, which
129 * is the number provided by the Cortex-A15MP test chip in the
130 * Versatile Express A15 development board.
131 * Other boards may differ and should set this property appropriately.
133 DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 160),
134 DEFINE_PROP_END_OF_LIST(),
137 static void a15mp_priv_class_init(ObjectClass *klass, void *data)
139 DeviceClass *dc = DEVICE_CLASS(klass);
141 dc->realize = a15mp_priv_realize;
142 dc->props = a15mp_priv_properties;
143 /* We currently have no savable state */
146 static const TypeInfo a15mp_priv_info = {
147 .name = TYPE_A15MPCORE_PRIV,
148 .parent = TYPE_SYS_BUS_DEVICE,
149 .instance_size = sizeof(A15MPPrivState),
150 .instance_init = a15mp_priv_initfn,
151 .class_init = a15mp_priv_class_init,
154 static void a15mp_register_types(void)
156 type_register_static(&a15mp_priv_info);
159 type_init(a15mp_register_types)