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 "hw/arm/bcm2835_peripherals.h"
12 #include "hw/misc/bcm2835_mbox_defs.h"
13 #include "hw/arm/raspi_platform.h"
15 /* Peripheral base address on the VC (GPU) system bus */
16 #define BCM2835_VC_PERI_BASE 0x7e000000
18 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
19 #define BCM2835_SDHC_CAPAREG 0x52034b4
21 static void bcm2835_peripherals_init(Object
*obj
)
23 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(obj
);
25 /* Memory region for peripheral devices, which we export to our parent */
26 memory_region_init(&s
->peri_mr
, obj
,"bcm2835-peripherals", 0x1000000);
27 object_property_add_child(obj
, "peripheral-io", OBJECT(&s
->peri_mr
), NULL
);
28 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->peri_mr
);
30 /* Internal memory region for peripheral bus addresses (not exported) */
31 memory_region_init(&s
->gpu_bus_mr
, obj
, "bcm2835-gpu", (uint64_t)1 << 32);
32 object_property_add_child(obj
, "gpu-bus", OBJECT(&s
->gpu_bus_mr
), NULL
);
34 /* Internal memory region for request/response communication with
35 * mailbox-addressable peripherals (not exported)
37 memory_region_init(&s
->mbox_mr
, obj
, "bcm2835-mbox",
38 MBOX_CHAN_COUNT
<< MBOX_AS_CHAN_SHIFT
);
40 /* Interrupt Controller */
41 object_initialize(&s
->ic
, sizeof(s
->ic
), TYPE_BCM2835_IC
);
42 object_property_add_child(obj
, "ic", OBJECT(&s
->ic
), NULL
);
43 qdev_set_parent_bus(DEVICE(&s
->ic
), sysbus_get_default());
46 s
->uart0
= SYS_BUS_DEVICE(object_new("pl011"));
47 object_property_add_child(obj
, "uart0", OBJECT(s
->uart0
), NULL
);
48 qdev_set_parent_bus(DEVICE(s
->uart0
), sysbus_get_default());
51 object_initialize(&s
->mboxes
, sizeof(s
->mboxes
), TYPE_BCM2835_MBOX
);
52 object_property_add_child(obj
, "mbox", OBJECT(&s
->mboxes
), NULL
);
53 qdev_set_parent_bus(DEVICE(&s
->mboxes
), sysbus_get_default());
55 object_property_add_const_link(OBJECT(&s
->mboxes
), "mbox-mr",
56 OBJECT(&s
->mbox_mr
), &error_abort
);
58 /* Property channel */
59 object_initialize(&s
->property
, sizeof(s
->property
), TYPE_BCM2835_PROPERTY
);
60 object_property_add_child(obj
, "property", OBJECT(&s
->property
), NULL
);
61 object_property_add_alias(obj
, "board-rev", OBJECT(&s
->property
),
62 "board-rev", &error_abort
);
63 qdev_set_parent_bus(DEVICE(&s
->property
), sysbus_get_default());
65 object_property_add_const_link(OBJECT(&s
->property
), "dma-mr",
66 OBJECT(&s
->gpu_bus_mr
), &error_abort
);
68 /* Extended Mass Media Controller */
69 object_initialize(&s
->sdhci
, sizeof(s
->sdhci
), TYPE_SYSBUS_SDHCI
);
70 object_property_add_child(obj
, "sdhci", OBJECT(&s
->sdhci
), NULL
);
71 qdev_set_parent_bus(DEVICE(&s
->sdhci
), sysbus_get_default());
74 static void bcm2835_peripherals_realize(DeviceState
*dev
, Error
**errp
)
76 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(dev
);
83 obj
= object_property_get_link(OBJECT(dev
), "ram", &err
);
85 error_setg(errp
, "%s: required ram link not found: %s",
86 __func__
, error_get_pretty(err
));
90 ram
= MEMORY_REGION(obj
);
91 ram_size
= memory_region_size(ram
);
93 /* Map peripherals and RAM into the GPU address space. */
94 memory_region_init_alias(&s
->peri_mr_alias
, OBJECT(s
),
95 "bcm2835-peripherals", &s
->peri_mr
, 0,
96 memory_region_size(&s
->peri_mr
));
98 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, BCM2835_VC_PERI_BASE
,
99 &s
->peri_mr_alias
, 1);
101 /* RAM is aliased four times (different cache configurations) on the GPU */
102 for (n
= 0; n
< 4; n
++) {
103 memory_region_init_alias(&s
->ram_alias
[n
], OBJECT(s
),
104 "bcm2835-gpu-ram-alias[*]", ram
, 0, ram_size
);
105 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, (hwaddr
)n
<< 30,
106 &s
->ram_alias
[n
], 0);
109 /* Interrupt Controller */
110 object_property_set_bool(OBJECT(&s
->ic
), true, "realized", &err
);
112 error_propagate(errp
, err
);
116 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_IC_OFFSET
,
117 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->ic
), 0));
118 sysbus_pass_irq(SYS_BUS_DEVICE(s
), SYS_BUS_DEVICE(&s
->ic
));
121 object_property_set_bool(OBJECT(s
->uart0
), true, "realized", &err
);
123 error_propagate(errp
, err
);
127 memory_region_add_subregion(&s
->peri_mr
, UART0_OFFSET
,
128 sysbus_mmio_get_region(s
->uart0
, 0));
129 sysbus_connect_irq(s
->uart0
, 0,
130 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
134 object_property_set_bool(OBJECT(&s
->mboxes
), true, "realized", &err
);
136 error_propagate(errp
, err
);
140 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_0_SBM_OFFSET
,
141 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->mboxes
), 0));
142 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->mboxes
), 0,
143 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_ARM_IRQ
,
144 INTERRUPT_ARM_MAILBOX
));
146 /* Property channel */
147 object_property_set_int(OBJECT(&s
->property
), ram_size
, "ram-size", &err
);
149 error_propagate(errp
, err
);
153 object_property_set_bool(OBJECT(&s
->property
), true, "realized", &err
);
155 error_propagate(errp
, err
);
159 memory_region_add_subregion(&s
->mbox_mr
,
160 MBOX_CHAN_PROPERTY
<< MBOX_AS_CHAN_SHIFT
,
161 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->property
), 0));
162 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->property
), 0,
163 qdev_get_gpio_in(DEVICE(&s
->mboxes
), MBOX_CHAN_PROPERTY
));
165 /* Extended Mass Media Controller */
166 object_property_set_int(OBJECT(&s
->sdhci
), BCM2835_SDHC_CAPAREG
, "capareg",
169 error_propagate(errp
, err
);
173 object_property_set_bool(OBJECT(&s
->sdhci
), true, "realized", &err
);
175 error_propagate(errp
, err
);
179 memory_region_add_subregion(&s
->peri_mr
, EMMC_OFFSET
,
180 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->sdhci
), 0));
181 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->sdhci
), 0,
182 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
183 INTERRUPT_ARASANSDIO
));
186 static void bcm2835_peripherals_class_init(ObjectClass
*oc
, void *data
)
188 DeviceClass
*dc
= DEVICE_CLASS(oc
);
190 dc
->realize
= bcm2835_peripherals_realize
;
193 static const TypeInfo bcm2835_peripherals_type_info
= {
194 .name
= TYPE_BCM2835_PERIPHERALS
,
195 .parent
= TYPE_SYS_BUS_DEVICE
,
196 .instance_size
= sizeof(BCM2835PeripheralState
),
197 .instance_init
= bcm2835_peripherals_init
,
198 .class_init
= bcm2835_peripherals_class_init
,
201 static void bcm2835_peripherals_register_types(void)
203 type_register_static(&bcm2835_peripherals_type_info
);
206 type_init(bcm2835_peripherals_register_types
)