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[qemu.git] / hw / cpu / a15mpcore.c
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1/*
2 * Cortex-A15MPCore internal peripheral emulation.
3 *
4 * Copyright (c) 2012 Linaro Limited.
5 * Written by Peter Maydell.
6 *
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.
11 *
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.
16 *
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/>.
19 */
20
43482f72 21#include "hw/cpu/a15mpcore.h"
ed466761 22#include "sysemu/kvm.h"
5d782e08 23
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24static void a15mp_priv_set_irq(void *opaque, int irq, int level)
25{
26 A15MPPrivState *s = (A15MPPrivState *)opaque;
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27
28 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
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29}
30
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31static void a15mp_priv_initfn(Object *obj)
32{
33 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
34 A15MPPrivState *s = A15MPCORE_PRIV(obj);
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35 DeviceState *gicdev;
36 const char *gictype = "arm_gic";
37
38 if (kvm_irqchip_in_kernel()) {
39 gictype = "kvm-arm-gic";
40 }
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41
42 memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000);
43 sysbus_init_mmio(sbd, &s->container);
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44
45 object_initialize(&s->gic, sizeof(s->gic), gictype);
46 gicdev = DEVICE(&s->gic);
47 qdev_set_parent_bus(gicdev, sysbus_get_default());
48 qdev_prop_set_uint32(gicdev, "revision", 2);
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49}
50
7c76a48d 51static void a15mp_priv_realize(DeviceState *dev, Error **errp)
5d782e08 52{
7c76a48d 53 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
97da11d8 54 A15MPPrivState *s = A15MPCORE_PRIV(dev);
524a2d8e 55 DeviceState *gicdev;
4637a027 56 SysBusDevice *busdev;
6033e840 57 int i;
7c76a48d 58 Error *err = NULL;
4637a027 59
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60 gicdev = DEVICE(&s->gic);
61 qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
62 qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
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63 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
64 if (err != NULL) {
65 error_propagate(errp, err);
66 return;
67 }
524a2d8e 68 busdev = SYS_BUS_DEVICE(&s->gic);
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69
70 /* Pass through outbound IRQ lines from the GIC */
7c76a48d 71 sysbus_pass_irq(sbd, busdev);
5d782e08 72
4637a027 73 /* Pass through inbound GPIO lines to the GIC */
7c76a48d 74 qdev_init_gpio_in(dev, a15mp_priv_set_irq, s->num_irq - 32);
5d782e08 75
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76 /* Wire the outputs from each CPU's generic timer to the
77 * appropriate GIC PPI inputs
78 */
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79 for (i = 0; i < s->num_cpu; i++) {
80 DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
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81 int ppibase = s->num_irq - 32 + i * 32;
82 /* physical timer; we wire it up to the non-secure timer's ID,
83 * since a real A15 always has TrustZone but QEMU doesn't.
84 */
85 qdev_connect_gpio_out(cpudev, 0,
524a2d8e 86 qdev_get_gpio_in(gicdev, ppibase + 30));
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87 /* virtual timer */
88 qdev_connect_gpio_out(cpudev, 1,
524a2d8e 89 qdev_get_gpio_in(gicdev, ppibase + 27));
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90 }
91
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92 /* Memory map (addresses are offsets from PERIPHBASE):
93 * 0x0000-0x0fff -- reserved
94 * 0x1000-0x1fff -- GIC Distributor
95 * 0x2000-0x2fff -- GIC CPU interface
96 * 0x4000-0x4fff -- GIC virtual interface control (not modelled)
97 * 0x5000-0x5fff -- GIC virtual interface control (not modelled)
98 * 0x6000-0x7fff -- GIC virtual CPU interface (not modelled)
99 */
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100 memory_region_add_subregion(&s->container, 0x1000,
101 sysbus_mmio_get_region(busdev, 0));
102 memory_region_add_subregion(&s->container, 0x2000,
103 sysbus_mmio_get_region(busdev, 1));
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104}
105
106static Property a15mp_priv_properties[] = {
107 DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1),
108 /* The Cortex-A15MP may have anything from 0 to 224 external interrupt
52862242 109 * IRQ lines (with another 32 internal). We default to 128+32, which
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110 * is the number provided by the Cortex-A15MP test chip in the
111 * Versatile Express A15 development board.
112 * Other boards may differ and should set this property appropriately.
113 */
52862242 114 DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 160),
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115 DEFINE_PROP_END_OF_LIST(),
116};
117
118static void a15mp_priv_class_init(ObjectClass *klass, void *data)
119{
120 DeviceClass *dc = DEVICE_CLASS(klass);
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121
122 dc->realize = a15mp_priv_realize;
5d782e08 123 dc->props = a15mp_priv_properties;
4637a027 124 /* We currently have no savable state */
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125}
126
8c43a6f0 127static const TypeInfo a15mp_priv_info = {
97da11d8 128 .name = TYPE_A15MPCORE_PRIV,
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129 .parent = TYPE_SYS_BUS_DEVICE,
130 .instance_size = sizeof(A15MPPrivState),
b9ed148d 131 .instance_init = a15mp_priv_initfn,
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132 .class_init = a15mp_priv_class_init,
133};
134
135static void a15mp_register_types(void)
136{
137 type_register_static(&a15mp_priv_info);
138}
139
140type_init(a15mp_register_types)