2 * Raspberry Pi emulation (c) 2012 Gregory Estrade
3 * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
5 * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
6 * Written by Andrew Baumann
8 * This code is licensed under the GNU GPLv2 and later.
11 #include "qemu/osdep.h"
12 #include "hw/arm/bcm2836.h"
13 #include "hw/arm/raspi_platform.h"
14 #include "hw/sysbus.h"
15 #include "exec/address-spaces.h"
17 /* Peripheral base address seen by the CPU */
18 #define BCM2836_PERI_BASE 0x3F000000
20 /* "QA7" (Pi2) interrupt controller and mailboxes etc. */
21 #define BCM2836_CONTROL_BASE 0x40000000
23 static void bcm2836_init(Object
*obj
)
25 BCM2836State
*s
= BCM2836(obj
);
28 for (n
= 0; n
< BCM2836_NCPUS
; n
++) {
29 object_initialize(&s
->cpus
[n
], sizeof(s
->cpus
[n
]),
30 "cortex-a15-" TYPE_ARM_CPU
);
31 object_property_add_child(obj
, "cpu[*]", OBJECT(&s
->cpus
[n
]),
35 object_initialize(&s
->control
, sizeof(s
->control
), TYPE_BCM2836_CONTROL
);
36 object_property_add_child(obj
, "control", OBJECT(&s
->control
), NULL
);
37 qdev_set_parent_bus(DEVICE(&s
->control
), sysbus_get_default());
39 object_initialize(&s
->peripherals
, sizeof(s
->peripherals
),
40 TYPE_BCM2835_PERIPHERALS
);
41 object_property_add_child(obj
, "peripherals", OBJECT(&s
->peripherals
),
43 object_property_add_alias(obj
, "board-rev", OBJECT(&s
->peripherals
),
44 "board-rev", &error_abort
);
45 qdev_set_parent_bus(DEVICE(&s
->peripherals
), sysbus_get_default());
48 static void bcm2836_realize(DeviceState
*dev
, Error
**errp
)
50 BCM2836State
*s
= BCM2836(dev
);
55 /* common peripherals from bcm2835 */
57 obj
= object_property_get_link(OBJECT(dev
), "ram", &err
);
59 error_setg(errp
, "%s: required ram link not found: %s",
60 __func__
, error_get_pretty(err
));
64 object_property_add_const_link(OBJECT(&s
->peripherals
), "ram", obj
, &err
);
66 error_propagate(errp
, err
);
70 object_property_set_bool(OBJECT(&s
->peripherals
), true, "realized", &err
);
72 error_propagate(errp
, err
);
76 object_property_add_alias(OBJECT(s
), "sd-bus", OBJECT(&s
->peripherals
),
79 error_propagate(errp
, err
);
83 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s
->peripherals
), 0,
84 BCM2836_PERI_BASE
, 1);
86 /* bcm2836 interrupt controller (and mailboxes, etc.) */
87 object_property_set_bool(OBJECT(&s
->control
), true, "realized", &err
);
89 error_propagate(errp
, err
);
93 sysbus_mmio_map(SYS_BUS_DEVICE(&s
->control
), 0, BCM2836_CONTROL_BASE
);
95 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->peripherals
), 0,
96 qdev_get_gpio_in_named(DEVICE(&s
->control
), "gpu-irq", 0));
97 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->peripherals
), 1,
98 qdev_get_gpio_in_named(DEVICE(&s
->control
), "gpu-fiq", 0));
100 for (n
= 0; n
< BCM2836_NCPUS
; n
++) {
101 /* Mirror bcm2836, which has clusterid set to 0xf
102 * TODO: this should be converted to a property of ARM_CPU
104 s
->cpus
[n
].mp_affinity
= 0xF00 | n
;
106 /* set periphbase/CBAR value for CPU-local registers */
107 object_property_set_int(OBJECT(&s
->cpus
[n
]),
108 BCM2836_PERI_BASE
+ MCORE_OFFSET
,
111 error_propagate(errp
, err
);
115 /* start powered off if not enabled */
116 object_property_set_bool(OBJECT(&s
->cpus
[n
]), n
>= s
->enabled_cpus
,
117 "start-powered-off", &err
);
119 error_propagate(errp
, err
);
123 object_property_set_bool(OBJECT(&s
->cpus
[n
]), true, "realized", &err
);
125 error_propagate(errp
, err
);
129 /* Connect irq/fiq outputs from the interrupt controller. */
130 qdev_connect_gpio_out_named(DEVICE(&s
->control
), "irq", n
,
131 qdev_get_gpio_in(DEVICE(&s
->cpus
[n
]), ARM_CPU_IRQ
));
132 qdev_connect_gpio_out_named(DEVICE(&s
->control
), "fiq", n
,
133 qdev_get_gpio_in(DEVICE(&s
->cpus
[n
]), ARM_CPU_FIQ
));
135 /* Connect timers from the CPU to the interrupt controller */
136 qdev_connect_gpio_out(DEVICE(&s
->cpus
[n
]), GTIMER_PHYS
,
137 qdev_get_gpio_in_named(DEVICE(&s
->control
), "cntpsirq", n
));
138 qdev_connect_gpio_out(DEVICE(&s
->cpus
[n
]), GTIMER_VIRT
,
139 qdev_get_gpio_in_named(DEVICE(&s
->control
), "cntvirq", n
));
143 static Property bcm2836_props
[] = {
144 DEFINE_PROP_UINT32("enabled-cpus", BCM2836State
, enabled_cpus
, BCM2836_NCPUS
),
145 DEFINE_PROP_END_OF_LIST()
148 static void bcm2836_class_init(ObjectClass
*oc
, void *data
)
150 DeviceClass
*dc
= DEVICE_CLASS(oc
);
152 dc
->props
= bcm2836_props
;
153 dc
->realize
= bcm2836_realize
;
156 * Reason: creates an ARM CPU, thus use after free(), see
157 * arm_cpu_class_init()
159 dc
->cannot_destroy_with_object_finalize_yet
= true;
162 static const TypeInfo bcm2836_type_info
= {
163 .name
= TYPE_BCM2836
,
164 .parent
= TYPE_SYS_BUS_DEVICE
,
165 .instance_size
= sizeof(BCM2836State
),
166 .instance_init
= bcm2836_init
,
167 .class_init
= bcm2836_class_init
,
170 static void bcm2836_register_types(void)
172 type_register_static(&bcm2836_type_info
);
175 type_init(bcm2836_register_types
)