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 "qapi/error.h"
13 #include "hw/arm/bcm2835_peripherals.h"
14 #include "hw/misc/bcm2835_mbox_defs.h"
15 #include "hw/arm/raspi_platform.h"
16 #include "sysemu/char.h"
18 /* Peripheral base address on the VC (GPU) system bus */
19 #define BCM2835_VC_PERI_BASE 0x7e000000
21 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
22 #define BCM2835_SDHC_CAPAREG 0x52034b4
24 static void bcm2835_peripherals_init(Object
*obj
)
26 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(obj
);
28 /* Memory region for peripheral devices, which we export to our parent */
29 memory_region_init(&s
->peri_mr
, obj
,"bcm2835-peripherals", 0x1000000);
30 object_property_add_child(obj
, "peripheral-io", OBJECT(&s
->peri_mr
), NULL
);
31 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->peri_mr
);
33 /* Internal memory region for peripheral bus addresses (not exported) */
34 memory_region_init(&s
->gpu_bus_mr
, obj
, "bcm2835-gpu", (uint64_t)1 << 32);
35 object_property_add_child(obj
, "gpu-bus", OBJECT(&s
->gpu_bus_mr
), NULL
);
37 /* Internal memory region for request/response communication with
38 * mailbox-addressable peripherals (not exported)
40 memory_region_init(&s
->mbox_mr
, obj
, "bcm2835-mbox",
41 MBOX_CHAN_COUNT
<< MBOX_AS_CHAN_SHIFT
);
43 /* Interrupt Controller */
44 object_initialize(&s
->ic
, sizeof(s
->ic
), TYPE_BCM2835_IC
);
45 object_property_add_child(obj
, "ic", OBJECT(&s
->ic
), NULL
);
46 qdev_set_parent_bus(DEVICE(&s
->ic
), sysbus_get_default());
49 s
->uart0
= SYS_BUS_DEVICE(object_new("pl011"));
50 object_property_add_child(obj
, "uart0", OBJECT(s
->uart0
), NULL
);
51 qdev_set_parent_bus(DEVICE(s
->uart0
), sysbus_get_default());
54 object_initialize(&s
->aux
, sizeof(s
->aux
), TYPE_BCM2835_AUX
);
55 object_property_add_child(obj
, "aux", OBJECT(&s
->aux
), NULL
);
56 qdev_set_parent_bus(DEVICE(&s
->aux
), sysbus_get_default());
59 object_initialize(&s
->mboxes
, sizeof(s
->mboxes
), TYPE_BCM2835_MBOX
);
60 object_property_add_child(obj
, "mbox", OBJECT(&s
->mboxes
), NULL
);
61 qdev_set_parent_bus(DEVICE(&s
->mboxes
), sysbus_get_default());
63 object_property_add_const_link(OBJECT(&s
->mboxes
), "mbox-mr",
64 OBJECT(&s
->mbox_mr
), &error_abort
);
67 object_initialize(&s
->fb
, sizeof(s
->fb
), TYPE_BCM2835_FB
);
68 object_property_add_child(obj
, "fb", OBJECT(&s
->fb
), NULL
);
69 object_property_add_alias(obj
, "vcram-size", OBJECT(&s
->fb
), "vcram-size",
71 qdev_set_parent_bus(DEVICE(&s
->fb
), sysbus_get_default());
73 object_property_add_const_link(OBJECT(&s
->fb
), "dma-mr",
74 OBJECT(&s
->gpu_bus_mr
), &error_abort
);
76 /* Property channel */
77 object_initialize(&s
->property
, sizeof(s
->property
), TYPE_BCM2835_PROPERTY
);
78 object_property_add_child(obj
, "property", OBJECT(&s
->property
), NULL
);
79 object_property_add_alias(obj
, "board-rev", OBJECT(&s
->property
),
80 "board-rev", &error_abort
);
81 qdev_set_parent_bus(DEVICE(&s
->property
), sysbus_get_default());
83 object_property_add_const_link(OBJECT(&s
->property
), "fb",
84 OBJECT(&s
->fb
), &error_abort
);
85 object_property_add_const_link(OBJECT(&s
->property
), "dma-mr",
86 OBJECT(&s
->gpu_bus_mr
), &error_abort
);
88 /* Extended Mass Media Controller */
89 object_initialize(&s
->sdhci
, sizeof(s
->sdhci
), TYPE_SYSBUS_SDHCI
);
90 object_property_add_child(obj
, "sdhci", OBJECT(&s
->sdhci
), NULL
);
91 qdev_set_parent_bus(DEVICE(&s
->sdhci
), sysbus_get_default());
94 object_initialize(&s
->dma
, sizeof(s
->dma
), TYPE_BCM2835_DMA
);
95 object_property_add_child(obj
, "dma", OBJECT(&s
->dma
), NULL
);
96 qdev_set_parent_bus(DEVICE(&s
->dma
), sysbus_get_default());
98 object_property_add_const_link(OBJECT(&s
->dma
), "dma-mr",
99 OBJECT(&s
->gpu_bus_mr
), &error_abort
);
102 static void bcm2835_peripherals_realize(DeviceState
*dev
, Error
**errp
)
104 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(dev
);
108 uint32_t ram_size
, vcram_size
;
109 CharDriverState
*chr
;
112 obj
= object_property_get_link(OBJECT(dev
), "ram", &err
);
114 error_setg(errp
, "%s: required ram link not found: %s",
115 __func__
, error_get_pretty(err
));
119 ram
= MEMORY_REGION(obj
);
120 ram_size
= memory_region_size(ram
);
122 /* Map peripherals and RAM into the GPU address space. */
123 memory_region_init_alias(&s
->peri_mr_alias
, OBJECT(s
),
124 "bcm2835-peripherals", &s
->peri_mr
, 0,
125 memory_region_size(&s
->peri_mr
));
127 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, BCM2835_VC_PERI_BASE
,
128 &s
->peri_mr_alias
, 1);
130 /* RAM is aliased four times (different cache configurations) on the GPU */
131 for (n
= 0; n
< 4; n
++) {
132 memory_region_init_alias(&s
->ram_alias
[n
], OBJECT(s
),
133 "bcm2835-gpu-ram-alias[*]", ram
, 0, ram_size
);
134 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, (hwaddr
)n
<< 30,
135 &s
->ram_alias
[n
], 0);
138 /* Interrupt Controller */
139 object_property_set_bool(OBJECT(&s
->ic
), true, "realized", &err
);
141 error_propagate(errp
, err
);
145 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_IC_OFFSET
,
146 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->ic
), 0));
147 sysbus_pass_irq(SYS_BUS_DEVICE(s
), SYS_BUS_DEVICE(&s
->ic
));
150 object_property_set_bool(OBJECT(s
->uart0
), true, "realized", &err
);
152 error_propagate(errp
, err
);
156 memory_region_add_subregion(&s
->peri_mr
, UART0_OFFSET
,
157 sysbus_mmio_get_region(s
->uart0
, 0));
158 sysbus_connect_irq(s
->uart0
, 0,
159 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
163 /* TODO: don't call qemu_char_get_next_serial() here, instead set
164 * chardev properties for each uart at the board level, once pl011
165 * (uart0) has been updated to avoid qemu_char_get_next_serial()
167 chr
= qemu_char_get_next_serial();
169 chr
= qemu_chr_new("bcm2835.uart1", "null", NULL
);
171 qdev_prop_set_chr(DEVICE(&s
->aux
), "chardev", chr
);
173 object_property_set_bool(OBJECT(&s
->aux
), true, "realized", &err
);
175 error_propagate(errp
, err
);
179 memory_region_add_subregion(&s
->peri_mr
, UART1_OFFSET
,
180 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->aux
), 0));
181 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->aux
), 0,
182 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
186 object_property_set_bool(OBJECT(&s
->mboxes
), true, "realized", &err
);
188 error_propagate(errp
, err
);
192 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_0_SBM_OFFSET
,
193 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->mboxes
), 0));
194 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->mboxes
), 0,
195 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_ARM_IRQ
,
196 INTERRUPT_ARM_MAILBOX
));
199 vcram_size
= (uint32_t)object_property_get_int(OBJECT(s
), "vcram-size",
202 error_propagate(errp
, err
);
206 object_property_set_int(OBJECT(&s
->fb
), ram_size
- vcram_size
,
209 error_propagate(errp
, err
);
213 object_property_set_bool(OBJECT(&s
->fb
), true, "realized", &err
);
215 error_propagate(errp
, err
);
219 memory_region_add_subregion(&s
->mbox_mr
, MBOX_CHAN_FB
<< MBOX_AS_CHAN_SHIFT
,
220 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->fb
), 0));
221 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->fb
), 0,
222 qdev_get_gpio_in(DEVICE(&s
->mboxes
), MBOX_CHAN_FB
));
224 /* Property channel */
225 object_property_set_bool(OBJECT(&s
->property
), true, "realized", &err
);
227 error_propagate(errp
, err
);
231 memory_region_add_subregion(&s
->mbox_mr
,
232 MBOX_CHAN_PROPERTY
<< MBOX_AS_CHAN_SHIFT
,
233 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->property
), 0));
234 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->property
), 0,
235 qdev_get_gpio_in(DEVICE(&s
->mboxes
), MBOX_CHAN_PROPERTY
));
237 /* Extended Mass Media Controller */
238 object_property_set_int(OBJECT(&s
->sdhci
), BCM2835_SDHC_CAPAREG
, "capareg",
241 error_propagate(errp
, err
);
245 object_property_set_bool(OBJECT(&s
->sdhci
), true, "pending-insert-quirk",
248 error_propagate(errp
, err
);
252 object_property_set_bool(OBJECT(&s
->sdhci
), true, "realized", &err
);
254 error_propagate(errp
, err
);
258 memory_region_add_subregion(&s
->peri_mr
, EMMC_OFFSET
,
259 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->sdhci
), 0));
260 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->sdhci
), 0,
261 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
262 INTERRUPT_ARASANSDIO
));
263 object_property_add_alias(OBJECT(s
), "sd-bus", OBJECT(&s
->sdhci
), "sd-bus",
266 error_propagate(errp
, err
);
271 object_property_set_bool(OBJECT(&s
->dma
), true, "realized", &err
);
273 error_propagate(errp
, err
);
277 memory_region_add_subregion(&s
->peri_mr
, DMA_OFFSET
,
278 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->dma
), 0));
279 memory_region_add_subregion(&s
->peri_mr
, DMA15_OFFSET
,
280 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->dma
), 1));
282 for (n
= 0; n
<= 12; n
++) {
283 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->dma
), n
,
284 qdev_get_gpio_in_named(DEVICE(&s
->ic
),
286 INTERRUPT_DMA0
+ n
));
290 static void bcm2835_peripherals_class_init(ObjectClass
*oc
, void *data
)
292 DeviceClass
*dc
= DEVICE_CLASS(oc
);
294 dc
->realize
= bcm2835_peripherals_realize
;
295 /* Reason: realize() method uses qemu_char_get_next_serial() */
296 dc
->cannot_instantiate_with_device_add_yet
= true;
299 static const TypeInfo bcm2835_peripherals_type_info
= {
300 .name
= TYPE_BCM2835_PERIPHERALS
,
301 .parent
= TYPE_SYS_BUS_DEVICE
,
302 .instance_size
= sizeof(BCM2835PeripheralState
),
303 .instance_init
= bcm2835_peripherals_init
,
304 .class_init
= bcm2835_peripherals_class_init
,
307 static void bcm2835_peripherals_register_types(void)
309 type_register_static(&bcm2835_peripherals_type_info
);
312 type_init(bcm2835_peripherals_register_types
)