2 * Cortex-A9MPCore internal peripheral emulation.
4 * Copyright (c) 2009 CodeSourcery.
5 * Copyright (c) 2011 Linaro Limited.
6 * Written by Paul Brook, Peter Maydell.
8 * This code is licensed under the GPL.
11 #include "qemu/osdep.h"
12 #include "qapi/error.h"
13 #include "qemu/module.h"
14 #include "hw/cpu/a9mpcore.h"
16 #include "hw/qdev-properties.h"
17 #include "hw/core/cpu.h"
19 #define A9_GIC_NUM_PRIORITY_BITS 5
21 static void a9mp_priv_set_irq(void *opaque
, int irq
, int level
)
23 A9MPPrivState
*s
= (A9MPPrivState
*)opaque
;
25 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s
->gic
), irq
), level
);
28 static void a9mp_priv_initfn(Object
*obj
)
30 A9MPPrivState
*s
= A9MPCORE_PRIV(obj
);
32 memory_region_init(&s
->container
, obj
, "a9mp-priv-container", 0x2000);
33 sysbus_init_mmio(SYS_BUS_DEVICE(obj
), &s
->container
);
35 object_initialize_child(obj
, "scu", &s
->scu
, TYPE_A9_SCU
);
37 object_initialize_child(obj
, "gic", &s
->gic
, TYPE_ARM_GIC
);
39 object_initialize_child(obj
, "gtimer", &s
->gtimer
, TYPE_A9_GTIMER
);
41 object_initialize_child(obj
, "mptimer", &s
->mptimer
, TYPE_ARM_MPTIMER
);
43 object_initialize_child(obj
, "wdt", &s
->wdt
, TYPE_ARM_MPTIMER
);
46 static void a9mp_priv_realize(DeviceState
*dev
, Error
**errp
)
48 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
49 A9MPPrivState
*s
= A9MPCORE_PRIV(dev
);
50 DeviceState
*scudev
, *gicdev
, *gtimerdev
, *mptimerdev
, *wdtdev
;
51 SysBusDevice
*scubusdev
, *gicbusdev
, *gtimerbusdev
, *mptimerbusdev
,
58 scudev
= DEVICE(&s
->scu
);
59 qdev_prop_set_uint32(scudev
, "num-cpu", s
->num_cpu
);
60 if (!sysbus_realize(SYS_BUS_DEVICE(&s
->scu
), &err
)) {
61 error_propagate(errp
, err
);
64 scubusdev
= SYS_BUS_DEVICE(&s
->scu
);
66 gicdev
= DEVICE(&s
->gic
);
67 qdev_prop_set_uint32(gicdev
, "num-cpu", s
->num_cpu
);
68 qdev_prop_set_uint32(gicdev
, "num-irq", s
->num_irq
);
69 qdev_prop_set_uint32(gicdev
, "num-priority-bits",
70 A9_GIC_NUM_PRIORITY_BITS
);
72 /* Make the GIC's TZ support match the CPUs. We assume that
73 * either all the CPUs have TZ, or none do.
75 cpuobj
= OBJECT(qemu_get_cpu(0));
76 has_el3
= object_property_find(cpuobj
, "has_el3", NULL
) &&
77 object_property_get_bool(cpuobj
, "has_el3", &error_abort
);
78 qdev_prop_set_bit(gicdev
, "has-security-extensions", has_el3
);
80 if (!sysbus_realize(SYS_BUS_DEVICE(&s
->gic
), &err
)) {
81 error_propagate(errp
, err
);
84 gicbusdev
= SYS_BUS_DEVICE(&s
->gic
);
86 /* Pass through outbound IRQ lines from the GIC */
87 sysbus_pass_irq(sbd
, gicbusdev
);
89 /* Pass through inbound GPIO lines to the GIC */
90 qdev_init_gpio_in(dev
, a9mp_priv_set_irq
, s
->num_irq
- 32);
92 gtimerdev
= DEVICE(&s
->gtimer
);
93 qdev_prop_set_uint32(gtimerdev
, "num-cpu", s
->num_cpu
);
94 if (!sysbus_realize(SYS_BUS_DEVICE(&s
->gtimer
), &err
)) {
95 error_propagate(errp
, err
);
98 gtimerbusdev
= SYS_BUS_DEVICE(&s
->gtimer
);
100 mptimerdev
= DEVICE(&s
->mptimer
);
101 qdev_prop_set_uint32(mptimerdev
, "num-cpu", s
->num_cpu
);
102 if (!sysbus_realize(SYS_BUS_DEVICE(&s
->mptimer
), &err
)) {
103 error_propagate(errp
, err
);
106 mptimerbusdev
= SYS_BUS_DEVICE(&s
->mptimer
);
108 wdtdev
= DEVICE(&s
->wdt
);
109 qdev_prop_set_uint32(wdtdev
, "num-cpu", s
->num_cpu
);
110 if (!sysbus_realize(SYS_BUS_DEVICE(&s
->wdt
), &err
)) {
111 error_propagate(errp
, err
);
114 wdtbusdev
= SYS_BUS_DEVICE(&s
->wdt
);
116 /* Memory map (addresses are offsets from PERIPHBASE):
117 * 0x0000-0x00ff -- Snoop Control Unit
118 * 0x0100-0x01ff -- GIC CPU interface
119 * 0x0200-0x02ff -- Global Timer
120 * 0x0300-0x05ff -- nothing
121 * 0x0600-0x06ff -- private timers and watchdogs
122 * 0x0700-0x0fff -- nothing
123 * 0x1000-0x1fff -- GIC Distributor
125 memory_region_add_subregion(&s
->container
, 0,
126 sysbus_mmio_get_region(scubusdev
, 0));
127 /* GIC CPU interface */
128 memory_region_add_subregion(&s
->container
, 0x100,
129 sysbus_mmio_get_region(gicbusdev
, 1));
130 memory_region_add_subregion(&s
->container
, 0x200,
131 sysbus_mmio_get_region(gtimerbusdev
, 0));
132 /* Note that the A9 exposes only the "timer/watchdog for this core"
133 * memory region, not the "timer/watchdog for core X" ones 11MPcore has.
135 memory_region_add_subregion(&s
->container
, 0x600,
136 sysbus_mmio_get_region(mptimerbusdev
, 0));
137 memory_region_add_subregion(&s
->container
, 0x620,
138 sysbus_mmio_get_region(wdtbusdev
, 0));
139 memory_region_add_subregion(&s
->container
, 0x1000,
140 sysbus_mmio_get_region(gicbusdev
, 0));
142 /* Wire up the interrupt from each watchdog and timer.
143 * For each core the global timer is PPI 27, the private
144 * timer is PPI 29 and the watchdog PPI 30.
146 for (i
= 0; i
< s
->num_cpu
; i
++) {
147 int ppibase
= (s
->num_irq
- 32) + i
* 32;
148 sysbus_connect_irq(gtimerbusdev
, i
,
149 qdev_get_gpio_in(gicdev
, ppibase
+ 27));
150 sysbus_connect_irq(mptimerbusdev
, i
,
151 qdev_get_gpio_in(gicdev
, ppibase
+ 29));
152 sysbus_connect_irq(wdtbusdev
, i
,
153 qdev_get_gpio_in(gicdev
, ppibase
+ 30));
157 static Property a9mp_priv_properties
[] = {
158 DEFINE_PROP_UINT32("num-cpu", A9MPPrivState
, num_cpu
, 1),
159 /* The Cortex-A9MP may have anything from 0 to 224 external interrupt
160 * IRQ lines (with another 32 internal). We default to 64+32, which
161 * is the number provided by the Cortex-A9MP test chip in the
162 * Realview PBX-A9 and Versatile Express A9 development boards.
163 * Other boards may differ and should set this property appropriately.
165 DEFINE_PROP_UINT32("num-irq", A9MPPrivState
, num_irq
, 96),
166 DEFINE_PROP_END_OF_LIST(),
169 static void a9mp_priv_class_init(ObjectClass
*klass
, void *data
)
171 DeviceClass
*dc
= DEVICE_CLASS(klass
);
173 dc
->realize
= a9mp_priv_realize
;
174 device_class_set_props(dc
, a9mp_priv_properties
);
177 static const TypeInfo a9mp_priv_info
= {
178 .name
= TYPE_A9MPCORE_PRIV
,
179 .parent
= TYPE_SYS_BUS_DEVICE
,
180 .instance_size
= sizeof(A9MPPrivState
),
181 .instance_init
= a9mp_priv_initfn
,
182 .class_init
= a9mp_priv_class_init
,
185 static void a9mp_register_types(void)
187 type_register_static(&a9mp_priv_info
);
190 type_init(a9mp_register_types
)