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5d782e08 PM |
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 | ||
0430891c | 21 | #include "qemu/osdep.h" |
da34e65c | 22 | #include "qapi/error.h" |
43482f72 | 23 | #include "hw/cpu/a15mpcore.h" |
ed466761 | 24 | #include "sysemu/kvm.h" |
e6fbcbc4 | 25 | #include "kvm_arm.h" |
5d782e08 | 26 | |
4637a027 PM |
27 | static void a15mp_priv_set_irq(void *opaque, int irq, int level) |
28 | { | |
29 | A15MPPrivState *s = (A15MPPrivState *)opaque; | |
524a2d8e AF |
30 | |
31 | qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); | |
4637a027 PM |
32 | } |
33 | ||
b9ed148d AF |
34 | static void a15mp_priv_initfn(Object *obj) |
35 | { | |
36 | SysBusDevice *sbd = SYS_BUS_DEVICE(obj); | |
37 | A15MPPrivState *s = A15MPCORE_PRIV(obj); | |
524a2d8e | 38 | DeviceState *gicdev; |
b9ed148d AF |
39 | |
40 | memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000); | |
41 | sysbus_init_mmio(sbd, &s->container); | |
524a2d8e | 42 | |
e6fbcbc4 | 43 | object_initialize(&s->gic, sizeof(s->gic), gic_class_name()); |
524a2d8e AF |
44 | gicdev = DEVICE(&s->gic); |
45 | qdev_set_parent_bus(gicdev, sysbus_get_default()); | |
46 | qdev_prop_set_uint32(gicdev, "revision", 2); | |
b9ed148d AF |
47 | } |
48 | ||
7c76a48d | 49 | static void a15mp_priv_realize(DeviceState *dev, Error **errp) |
5d782e08 | 50 | { |
7c76a48d | 51 | SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
97da11d8 | 52 | A15MPPrivState *s = A15MPCORE_PRIV(dev); |
524a2d8e | 53 | DeviceState *gicdev; |
4637a027 | 54 | SysBusDevice *busdev; |
6033e840 | 55 | int i; |
7c76a48d | 56 | Error *err = NULL; |
4182bbb1 PM |
57 | bool has_el3; |
58 | Object *cpuobj; | |
4637a027 | 59 | |
524a2d8e AF |
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); | |
4182bbb1 PM |
63 | |
64 | if (!kvm_irqchip_in_kernel()) { | |
65 | /* Make the GIC's TZ support match the CPUs. We assume that | |
66 | * either all the CPUs have TZ, or none do. | |
67 | */ | |
68 | cpuobj = OBJECT(qemu_get_cpu(0)); | |
6533a1fc | 69 | has_el3 = object_property_find(cpuobj, "has_el3", NULL) && |
4182bbb1 PM |
70 | object_property_get_bool(cpuobj, "has_el3", &error_abort); |
71 | qdev_prop_set_bit(gicdev, "has-security-extensions", has_el3); | |
72 | } | |
73 | ||
7c76a48d AF |
74 | object_property_set_bool(OBJECT(&s->gic), true, "realized", &err); |
75 | if (err != NULL) { | |
76 | error_propagate(errp, err); | |
77 | return; | |
78 | } | |
524a2d8e | 79 | busdev = SYS_BUS_DEVICE(&s->gic); |
4637a027 PM |
80 | |
81 | /* Pass through outbound IRQ lines from the GIC */ | |
7c76a48d | 82 | sysbus_pass_irq(sbd, busdev); |
5d782e08 | 83 | |
4637a027 | 84 | /* Pass through inbound GPIO lines to the GIC */ |
7c76a48d | 85 | qdev_init_gpio_in(dev, a15mp_priv_set_irq, s->num_irq - 32); |
5d782e08 | 86 | |
6033e840 PM |
87 | /* Wire the outputs from each CPU's generic timer to the |
88 | * appropriate GIC PPI inputs | |
89 | */ | |
27013bf2 AF |
90 | for (i = 0; i < s->num_cpu; i++) { |
91 | DeviceState *cpudev = DEVICE(qemu_get_cpu(i)); | |
6033e840 | 92 | int ppibase = s->num_irq - 32 + i * 32; |
5dfaa75b PM |
93 | int irq; |
94 | /* Mapping from the output timer irq lines from the CPU to the | |
95 | * GIC PPI inputs used on the A15: | |
6033e840 | 96 | */ |
5dfaa75b PM |
97 | const int timer_irq[] = { |
98 | [GTIMER_PHYS] = 30, | |
99 | [GTIMER_VIRT] = 27, | |
100 | [GTIMER_HYP] = 26, | |
101 | [GTIMER_SEC] = 29, | |
102 | }; | |
103 | for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) { | |
104 | qdev_connect_gpio_out(cpudev, irq, | |
105 | qdev_get_gpio_in(gicdev, | |
106 | ppibase + timer_irq[irq])); | |
107 | } | |
6033e840 PM |
108 | } |
109 | ||
5d782e08 PM |
110 | /* Memory map (addresses are offsets from PERIPHBASE): |
111 | * 0x0000-0x0fff -- reserved | |
112 | * 0x1000-0x1fff -- GIC Distributor | |
a55c910e | 113 | * 0x2000-0x3fff -- GIC CPU interface |
5d782e08 PM |
114 | * 0x4000-0x4fff -- GIC virtual interface control (not modelled) |
115 | * 0x5000-0x5fff -- GIC virtual interface control (not modelled) | |
116 | * 0x6000-0x7fff -- GIC virtual CPU interface (not modelled) | |
117 | */ | |
4637a027 PM |
118 | memory_region_add_subregion(&s->container, 0x1000, |
119 | sysbus_mmio_get_region(busdev, 0)); | |
120 | memory_region_add_subregion(&s->container, 0x2000, | |
121 | sysbus_mmio_get_region(busdev, 1)); | |
5d782e08 PM |
122 | } |
123 | ||
124 | static Property a15mp_priv_properties[] = { | |
125 | DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1), | |
126 | /* The Cortex-A15MP may have anything from 0 to 224 external interrupt | |
52862242 | 127 | * IRQ lines (with another 32 internal). We default to 128+32, which |
5d782e08 PM |
128 | * is the number provided by the Cortex-A15MP test chip in the |
129 | * Versatile Express A15 development board. | |
130 | * Other boards may differ and should set this property appropriately. | |
131 | */ | |
52862242 | 132 | DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 160), |
5d782e08 PM |
133 | DEFINE_PROP_END_OF_LIST(), |
134 | }; | |
135 | ||
136 | static void a15mp_priv_class_init(ObjectClass *klass, void *data) | |
137 | { | |
138 | DeviceClass *dc = DEVICE_CLASS(klass); | |
7c76a48d AF |
139 | |
140 | dc->realize = a15mp_priv_realize; | |
5d782e08 | 141 | dc->props = a15mp_priv_properties; |
4637a027 | 142 | /* We currently have no savable state */ |
5d782e08 PM |
143 | } |
144 | ||
8c43a6f0 | 145 | static const TypeInfo a15mp_priv_info = { |
97da11d8 | 146 | .name = TYPE_A15MPCORE_PRIV, |
5d782e08 PM |
147 | .parent = TYPE_SYS_BUS_DEVICE, |
148 | .instance_size = sizeof(A15MPPrivState), | |
b9ed148d | 149 | .instance_init = a15mp_priv_initfn, |
5d782e08 PM |
150 | .class_init = a15mp_priv_class_init, |
151 | }; | |
152 | ||
153 | static void a15mp_register_types(void) | |
154 | { | |
155 | type_register_static(&a15mp_priv_info); | |
156 | } | |
157 | ||
158 | type_init(a15mp_register_types) |