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 "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "qemu/module.h"
24 #include "hw/cpu/a15mpcore.h"
25 #include "sysemu/kvm.h"
28 static void a15mp_priv_set_irq(void *opaque
, int irq
, int level
)
30 A15MPPrivState
*s
= (A15MPPrivState
*)opaque
;
32 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s
->gic
), irq
), level
);
35 static void a15mp_priv_initfn(Object
*obj
)
37 SysBusDevice
*sbd
= SYS_BUS_DEVICE(obj
);
38 A15MPPrivState
*s
= A15MPCORE_PRIV(obj
);
40 memory_region_init(&s
->container
, obj
, "a15mp-priv-container", 0x8000);
41 sysbus_init_mmio(sbd
, &s
->container
);
43 sysbus_init_child_obj(obj
, "gic", &s
->gic
, sizeof(s
->gic
),
45 qdev_prop_set_uint32(DEVICE(&s
->gic
), "revision", 2);
48 static void a15mp_priv_realize(DeviceState
*dev
, Error
**errp
)
50 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
51 A15MPPrivState
*s
= A15MPCORE_PRIV(dev
);
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
);
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.
68 cpuobj
= OBJECT(qemu_get_cpu(0));
69 has_el3
= object_property_find(cpuobj
, "has_el3", NULL
) &&
70 object_property_get_bool(cpuobj
, "has_el3", &error_abort
);
71 qdev_prop_set_bit(gicdev
, "has-security-extensions", has_el3
);
72 /* Similarly for virtualization support */
73 has_el2
= object_property_find(cpuobj
, "has_el2", NULL
) &&
74 object_property_get_bool(cpuobj
, "has_el2", &error_abort
);
75 qdev_prop_set_bit(gicdev
, "has-virtualization-extensions", has_el2
);
78 object_property_set_bool(OBJECT(&s
->gic
), true, "realized", &err
);
80 error_propagate(errp
, err
);
83 busdev
= SYS_BUS_DEVICE(&s
->gic
);
85 /* Pass through outbound IRQ lines from the GIC */
86 sysbus_pass_irq(sbd
, busdev
);
88 /* Pass through inbound GPIO lines to the GIC */
89 qdev_init_gpio_in(dev
, a15mp_priv_set_irq
, s
->num_irq
- 32);
91 /* Wire the outputs from each CPU's generic timer to the
92 * appropriate GIC PPI inputs
94 for (i
= 0; i
< s
->num_cpu
; i
++) {
95 DeviceState
*cpudev
= DEVICE(qemu_get_cpu(i
));
96 int ppibase
= s
->num_irq
- 32 + i
* 32;
98 /* Mapping from the output timer irq lines from the CPU to the
99 * GIC PPI inputs used on the A15:
101 const int timer_irq
[] = {
107 for (irq
= 0; irq
< ARRAY_SIZE(timer_irq
); irq
++) {
108 qdev_connect_gpio_out(cpudev
, irq
,
109 qdev_get_gpio_in(gicdev
,
110 ppibase
+ timer_irq
[irq
]));
113 /* Connect the GIC maintenance interrupt to PPI ID 25 */
114 sysbus_connect_irq(SYS_BUS_DEVICE(gicdev
), i
+ 4 * s
->num_cpu
,
115 qdev_get_gpio_in(gicdev
, ppibase
+ 25));
119 /* Memory map (addresses are offsets from PERIPHBASE):
120 * 0x0000-0x0fff -- reserved
121 * 0x1000-0x1fff -- GIC Distributor
122 * 0x2000-0x3fff -- GIC CPU interface
123 * 0x4000-0x4fff -- GIC virtual interface control for this CPU
124 * 0x5000-0x51ff -- GIC virtual interface control for CPU 0
125 * 0x5200-0x53ff -- GIC virtual interface control for CPU 1
126 * 0x5400-0x55ff -- GIC virtual interface control for CPU 2
127 * 0x5600-0x57ff -- GIC virtual interface control for CPU 3
128 * 0x6000-0x7fff -- GIC virtual CPU interface
130 memory_region_add_subregion(&s
->container
, 0x1000,
131 sysbus_mmio_get_region(busdev
, 0));
132 memory_region_add_subregion(&s
->container
, 0x2000,
133 sysbus_mmio_get_region(busdev
, 1));
135 memory_region_add_subregion(&s
->container
, 0x4000,
136 sysbus_mmio_get_region(busdev
, 2));
137 memory_region_add_subregion(&s
->container
, 0x6000,
138 sysbus_mmio_get_region(busdev
, 3));
139 for (i
= 0; i
< s
->num_cpu
; i
++) {
140 hwaddr base
= 0x5000 + i
* 0x200;
141 MemoryRegion
*mr
= sysbus_mmio_get_region(busdev
,
143 memory_region_add_subregion(&s
->container
, base
, mr
);
148 static Property a15mp_priv_properties
[] = {
149 DEFINE_PROP_UINT32("num-cpu", A15MPPrivState
, num_cpu
, 1),
150 /* The Cortex-A15MP may have anything from 0 to 224 external interrupt
151 * IRQ lines (with another 32 internal). We default to 128+32, which
152 * is the number provided by the Cortex-A15MP test chip in the
153 * Versatile Express A15 development board.
154 * Other boards may differ and should set this property appropriately.
156 DEFINE_PROP_UINT32("num-irq", A15MPPrivState
, num_irq
, 160),
157 DEFINE_PROP_END_OF_LIST(),
160 static void a15mp_priv_class_init(ObjectClass
*klass
, void *data
)
162 DeviceClass
*dc
= DEVICE_CLASS(klass
);
164 dc
->realize
= a15mp_priv_realize
;
165 dc
->props
= a15mp_priv_properties
;
166 /* We currently have no savable state */
169 static const TypeInfo a15mp_priv_info
= {
170 .name
= TYPE_A15MPCORE_PRIV
,
171 .parent
= TYPE_SYS_BUS_DEVICE
,
172 .instance_size
= sizeof(A15MPPrivState
),
173 .instance_init
= a15mp_priv_initfn
,
174 .class_init
= a15mp_priv_class_init
,
177 static void a15mp_register_types(void)
179 type_register_static(&a15mp_priv_info
);
182 type_init(a15mp_register_types
)