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 work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
12 #include "qemu/osdep.h"
13 #include "qapi/error.h"
14 #include "qemu/module.h"
15 #include "hw/arm/bcm2835_peripherals.h"
16 #include "hw/misc/bcm2835_mbox_defs.h"
17 #include "hw/arm/raspi_platform.h"
18 #include "sysemu/sysemu.h"
20 /* Peripheral base address on the VC (GPU) system bus */
21 #define BCM2835_VC_PERI_BASE 0x7e000000
23 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
24 #define BCM2835_SDHC_CAPAREG 0x52134b4
26 static void create_unimp(BCM2835PeripheralState
*ps
,
27 UnimplementedDeviceState
*uds
,
28 const char *name
, hwaddr ofs
, hwaddr size
)
30 sysbus_init_child_obj(OBJECT(ps
), name
, uds
,
31 sizeof(UnimplementedDeviceState
),
32 TYPE_UNIMPLEMENTED_DEVICE
);
33 qdev_prop_set_string(DEVICE(uds
), "name", name
);
34 qdev_prop_set_uint64(DEVICE(uds
), "size", size
);
35 object_property_set_bool(OBJECT(uds
), true, "realized", &error_fatal
);
36 memory_region_add_subregion_overlap(&ps
->peri_mr
, ofs
,
37 sysbus_mmio_get_region(SYS_BUS_DEVICE(uds
), 0), -1000);
40 static void bcm2835_peripherals_init(Object
*obj
)
42 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(obj
);
44 /* Memory region for peripheral devices, which we export to our parent */
45 memory_region_init(&s
->peri_mr
, obj
,"bcm2835-peripherals", 0x1000000);
46 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->peri_mr
);
48 /* Internal memory region for peripheral bus addresses (not exported) */
49 memory_region_init(&s
->gpu_bus_mr
, obj
, "bcm2835-gpu", (uint64_t)1 << 32);
51 /* Internal memory region for request/response communication with
52 * mailbox-addressable peripherals (not exported)
54 memory_region_init(&s
->mbox_mr
, obj
, "bcm2835-mbox",
55 MBOX_CHAN_COUNT
<< MBOX_AS_CHAN_SHIFT
);
57 /* Interrupt Controller */
58 sysbus_init_child_obj(obj
, "ic", &s
->ic
, sizeof(s
->ic
), TYPE_BCM2835_IC
);
61 sysbus_init_child_obj(obj
, "systimer", &s
->systmr
, sizeof(s
->systmr
),
62 TYPE_BCM2835_SYSTIMER
);
65 sysbus_init_child_obj(obj
, "uart0", &s
->uart0
, sizeof(s
->uart0
),
69 sysbus_init_child_obj(obj
, "aux", &s
->aux
, sizeof(s
->aux
),
73 sysbus_init_child_obj(obj
, "mbox", &s
->mboxes
, sizeof(s
->mboxes
),
76 object_property_add_const_link(OBJECT(&s
->mboxes
), "mbox-mr",
80 sysbus_init_child_obj(obj
, "fb", &s
->fb
, sizeof(s
->fb
), TYPE_BCM2835_FB
);
81 object_property_add_alias(obj
, "vcram-size", OBJECT(&s
->fb
), "vcram-size");
83 object_property_add_const_link(OBJECT(&s
->fb
), "dma-mr",
84 OBJECT(&s
->gpu_bus_mr
));
86 /* Property channel */
87 sysbus_init_child_obj(obj
, "property", &s
->property
, sizeof(s
->property
),
88 TYPE_BCM2835_PROPERTY
);
89 object_property_add_alias(obj
, "board-rev", OBJECT(&s
->property
),
92 object_property_add_const_link(OBJECT(&s
->property
), "fb",
94 object_property_add_const_link(OBJECT(&s
->property
), "dma-mr",
95 OBJECT(&s
->gpu_bus_mr
));
97 /* Random Number Generator */
98 sysbus_init_child_obj(obj
, "rng", &s
->rng
, sizeof(s
->rng
),
101 /* Extended Mass Media Controller */
102 sysbus_init_child_obj(obj
, "sdhci", &s
->sdhci
, sizeof(s
->sdhci
),
106 sysbus_init_child_obj(obj
, "sdhost", &s
->sdhost
, sizeof(s
->sdhost
),
107 TYPE_BCM2835_SDHOST
);
110 sysbus_init_child_obj(obj
, "dma", &s
->dma
, sizeof(s
->dma
),
113 object_property_add_const_link(OBJECT(&s
->dma
), "dma-mr",
114 OBJECT(&s
->gpu_bus_mr
));
117 sysbus_init_child_obj(obj
, "thermal", &s
->thermal
, sizeof(s
->thermal
),
118 TYPE_BCM2835_THERMAL
);
121 sysbus_init_child_obj(obj
, "gpio", &s
->gpio
, sizeof(s
->gpio
),
124 object_property_add_const_link(OBJECT(&s
->gpio
), "sdbus-sdhci",
125 OBJECT(&s
->sdhci
.sdbus
));
126 object_property_add_const_link(OBJECT(&s
->gpio
), "sdbus-sdhost",
127 OBJECT(&s
->sdhost
.sdbus
));
130 static void bcm2835_peripherals_realize(DeviceState
*dev
, Error
**errp
)
132 BCM2835PeripheralState
*s
= BCM2835_PERIPHERALS(dev
);
136 uint64_t ram_size
, vcram_size
;
139 obj
= object_property_get_link(OBJECT(dev
), "ram", &err
);
141 error_setg(errp
, "%s: required ram link not found: %s",
142 __func__
, error_get_pretty(err
));
146 ram
= MEMORY_REGION(obj
);
147 ram_size
= memory_region_size(ram
);
149 /* Map peripherals and RAM into the GPU address space. */
150 memory_region_init_alias(&s
->peri_mr_alias
, OBJECT(s
),
151 "bcm2835-peripherals", &s
->peri_mr
, 0,
152 memory_region_size(&s
->peri_mr
));
154 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, BCM2835_VC_PERI_BASE
,
155 &s
->peri_mr_alias
, 1);
157 /* RAM is aliased four times (different cache configurations) on the GPU */
158 for (n
= 0; n
< 4; n
++) {
159 memory_region_init_alias(&s
->ram_alias
[n
], OBJECT(s
),
160 "bcm2835-gpu-ram-alias[*]", ram
, 0, ram_size
);
161 memory_region_add_subregion_overlap(&s
->gpu_bus_mr
, (hwaddr
)n
<< 30,
162 &s
->ram_alias
[n
], 0);
165 /* Interrupt Controller */
166 object_property_set_bool(OBJECT(&s
->ic
), true, "realized", &err
);
168 error_propagate(errp
, err
);
172 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_IC_OFFSET
,
173 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->ic
), 0));
174 sysbus_pass_irq(SYS_BUS_DEVICE(s
), SYS_BUS_DEVICE(&s
->ic
));
177 object_property_set_bool(OBJECT(&s
->systmr
), true, "realized", &err
);
179 error_propagate(errp
, err
);
182 memory_region_add_subregion(&s
->peri_mr
, ST_OFFSET
,
183 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->systmr
), 0));
184 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->systmr
), 0,
185 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_ARM_IRQ
,
186 INTERRUPT_ARM_TIMER
));
189 qdev_prop_set_chr(DEVICE(&s
->uart0
), "chardev", serial_hd(0));
190 object_property_set_bool(OBJECT(&s
->uart0
), true, "realized", &err
);
192 error_propagate(errp
, err
);
196 memory_region_add_subregion(&s
->peri_mr
, UART0_OFFSET
,
197 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->uart0
), 0));
198 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->uart0
), 0,
199 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
203 qdev_prop_set_chr(DEVICE(&s
->aux
), "chardev", serial_hd(1));
205 object_property_set_bool(OBJECT(&s
->aux
), true, "realized", &err
);
207 error_propagate(errp
, err
);
211 memory_region_add_subregion(&s
->peri_mr
, AUX_OFFSET
,
212 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->aux
), 0));
213 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->aux
), 0,
214 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
218 object_property_set_bool(OBJECT(&s
->mboxes
), true, "realized", &err
);
220 error_propagate(errp
, err
);
224 memory_region_add_subregion(&s
->peri_mr
, ARMCTRL_0_SBM_OFFSET
,
225 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->mboxes
), 0));
226 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->mboxes
), 0,
227 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_ARM_IRQ
,
228 INTERRUPT_ARM_MAILBOX
));
231 vcram_size
= object_property_get_uint(OBJECT(s
), "vcram-size", &err
);
233 error_propagate(errp
, err
);
237 object_property_set_uint(OBJECT(&s
->fb
), ram_size
- vcram_size
,
240 error_propagate(errp
, err
);
244 object_property_set_bool(OBJECT(&s
->fb
), true, "realized", &err
);
246 error_propagate(errp
, err
);
250 memory_region_add_subregion(&s
->mbox_mr
, MBOX_CHAN_FB
<< MBOX_AS_CHAN_SHIFT
,
251 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->fb
), 0));
252 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->fb
), 0,
253 qdev_get_gpio_in(DEVICE(&s
->mboxes
), MBOX_CHAN_FB
));
255 /* Property channel */
256 object_property_set_bool(OBJECT(&s
->property
), true, "realized", &err
);
258 error_propagate(errp
, err
);
262 memory_region_add_subregion(&s
->mbox_mr
,
263 MBOX_CHAN_PROPERTY
<< MBOX_AS_CHAN_SHIFT
,
264 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->property
), 0));
265 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->property
), 0,
266 qdev_get_gpio_in(DEVICE(&s
->mboxes
), MBOX_CHAN_PROPERTY
));
268 /* Random Number Generator */
269 object_property_set_bool(OBJECT(&s
->rng
), true, "realized", &err
);
271 error_propagate(errp
, err
);
275 memory_region_add_subregion(&s
->peri_mr
, RNG_OFFSET
,
276 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->rng
), 0));
278 /* Extended Mass Media Controller
281 * - SD Host Controller Specification Version 3.0 Draft 1.0
282 * - SDIO Specification Version 3.0
283 * - MMC Specification Version 4.4
285 * For the exact details please refer to the Arasan documentation:
286 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
288 object_property_set_uint(OBJECT(&s
->sdhci
), 3, "sd-spec-version", &err
);
289 object_property_set_uint(OBJECT(&s
->sdhci
), BCM2835_SDHC_CAPAREG
, "capareg",
291 object_property_set_bool(OBJECT(&s
->sdhci
), true, "pending-insert-quirk",
294 error_propagate(errp
, err
);
298 object_property_set_bool(OBJECT(&s
->sdhci
), true, "realized", &err
);
300 error_propagate(errp
, err
);
304 memory_region_add_subregion(&s
->peri_mr
, EMMC1_OFFSET
,
305 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->sdhci
), 0));
306 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->sdhci
), 0,
307 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
308 INTERRUPT_ARASANSDIO
));
311 object_property_set_bool(OBJECT(&s
->sdhost
), true, "realized", &err
);
313 error_propagate(errp
, err
);
317 memory_region_add_subregion(&s
->peri_mr
, MMCI0_OFFSET
,
318 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->sdhost
), 0));
319 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->sdhost
), 0,
320 qdev_get_gpio_in_named(DEVICE(&s
->ic
), BCM2835_IC_GPU_IRQ
,
324 object_property_set_bool(OBJECT(&s
->dma
), true, "realized", &err
);
326 error_propagate(errp
, err
);
330 memory_region_add_subregion(&s
->peri_mr
, DMA_OFFSET
,
331 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->dma
), 0));
332 memory_region_add_subregion(&s
->peri_mr
, DMA15_OFFSET
,
333 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->dma
), 1));
335 for (n
= 0; n
<= 12; n
++) {
336 sysbus_connect_irq(SYS_BUS_DEVICE(&s
->dma
), n
,
337 qdev_get_gpio_in_named(DEVICE(&s
->ic
),
339 INTERRUPT_DMA0
+ n
));
343 object_property_set_bool(OBJECT(&s
->thermal
), true, "realized", &err
);
345 error_propagate(errp
, err
);
348 memory_region_add_subregion(&s
->peri_mr
, THERMAL_OFFSET
,
349 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->thermal
), 0));
352 object_property_set_bool(OBJECT(&s
->gpio
), true, "realized", &err
);
354 error_propagate(errp
, err
);
358 memory_region_add_subregion(&s
->peri_mr
, GPIO_OFFSET
,
359 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s
->gpio
), 0));
361 object_property_add_alias(OBJECT(s
), "sd-bus", OBJECT(&s
->gpio
), "sd-bus");
363 create_unimp(s
, &s
->armtmr
, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET
, 0x40);
364 create_unimp(s
, &s
->cprman
, "bcm2835-cprman", CPRMAN_OFFSET
, 0x1000);
365 create_unimp(s
, &s
->a2w
, "bcm2835-a2w", A2W_OFFSET
, 0x1000);
366 create_unimp(s
, &s
->i2s
, "bcm2835-i2s", I2S_OFFSET
, 0x100);
367 create_unimp(s
, &s
->smi
, "bcm2835-smi", SMI_OFFSET
, 0x100);
368 create_unimp(s
, &s
->spi
[0], "bcm2835-spi0", SPI0_OFFSET
, 0x20);
369 create_unimp(s
, &s
->bscsl
, "bcm2835-spis", BSC_SL_OFFSET
, 0x100);
370 create_unimp(s
, &s
->i2c
[0], "bcm2835-i2c0", BSC0_OFFSET
, 0x20);
371 create_unimp(s
, &s
->i2c
[1], "bcm2835-i2c1", BSC1_OFFSET
, 0x20);
372 create_unimp(s
, &s
->i2c
[2], "bcm2835-i2c2", BSC2_OFFSET
, 0x20);
373 create_unimp(s
, &s
->otp
, "bcm2835-otp", OTP_OFFSET
, 0x80);
374 create_unimp(s
, &s
->dbus
, "bcm2835-dbus", DBUS_OFFSET
, 0x8000);
375 create_unimp(s
, &s
->ave0
, "bcm2835-ave0", AVE0_OFFSET
, 0x8000);
376 create_unimp(s
, &s
->dwc2
, "dwc-usb2", USB_OTG_OFFSET
, 0x1000);
377 create_unimp(s
, &s
->sdramc
, "bcm2835-sdramc", SDRAMC_OFFSET
, 0x100);
380 static void bcm2835_peripherals_class_init(ObjectClass
*oc
, void *data
)
382 DeviceClass
*dc
= DEVICE_CLASS(oc
);
384 dc
->realize
= bcm2835_peripherals_realize
;
387 static const TypeInfo bcm2835_peripherals_type_info
= {
388 .name
= TYPE_BCM2835_PERIPHERALS
,
389 .parent
= TYPE_SYS_BUS_DEVICE
,
390 .instance_size
= sizeof(BCM2835PeripheralState
),
391 .instance_init
= bcm2835_peripherals_init
,
392 .class_init
= bcm2835_peripherals_class_init
,
395 static void bcm2835_peripherals_register_types(void)
397 type_register_static(&bcm2835_peripherals_type_info
);
400 type_init(bcm2835_peripherals_register_types
)