1 | /* |
2 | * Raspberry Pi emulation (c) 2012 Gregory Estrade |
3 | * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous |
4 | * |
5 | * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft |
6 | * Written by Andrew Baumann |
7 | * |
8 | * This code is licensed under the GNU GPLv2 and later. |
9 | */ |
10 | |
11 | #include "qemu/osdep.h" |
12 | #include "qapi/error.h" |
13 | #include "qemu/module.h" |
14 | #include "hw/arm/bcm2835_peripherals.h" |
15 | #include "hw/misc/bcm2835_mbox_defs.h" |
16 | #include "hw/arm/raspi_platform.h" |
17 | #include "sysemu/sysemu.h" |
18 | |
19 | /* Peripheral base address on the VC (GPU) system bus */ |
20 | #define BCM2835_VC_PERI_BASE 0x7e000000 |
21 | |
22 | /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */ |
23 | #define BCM2835_SDHC_CAPAREG 0x52134b4 |
24 | |
25 | static void bcm2835_peripherals_init(Object *obj) |
26 | { |
27 | BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj); |
28 | |
29 | /* Memory region for peripheral devices, which we export to our parent */ |
30 | memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals" , 0x1000000); |
31 | object_property_add_child(obj, "peripheral-io" , OBJECT(&s->peri_mr), NULL); |
32 | sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr); |
33 | |
34 | /* Internal memory region for peripheral bus addresses (not exported) */ |
35 | memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu" , (uint64_t)1 << 32); |
36 | object_property_add_child(obj, "gpu-bus" , OBJECT(&s->gpu_bus_mr), NULL); |
37 | |
38 | /* Internal memory region for request/response communication with |
39 | * mailbox-addressable peripherals (not exported) |
40 | */ |
41 | memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox" , |
42 | MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); |
43 | |
44 | /* Interrupt Controller */ |
45 | sysbus_init_child_obj(obj, "ic" , &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); |
46 | |
47 | /* UART0 */ |
48 | sysbus_init_child_obj(obj, "uart0" , &s->uart0, sizeof(s->uart0), |
49 | TYPE_PL011); |
50 | |
51 | /* AUX / UART1 */ |
52 | sysbus_init_child_obj(obj, "aux" , &s->aux, sizeof(s->aux), |
53 | TYPE_BCM2835_AUX); |
54 | |
55 | /* Mailboxes */ |
56 | sysbus_init_child_obj(obj, "mbox" , &s->mboxes, sizeof(s->mboxes), |
57 | TYPE_BCM2835_MBOX); |
58 | |
59 | object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr" , |
60 | OBJECT(&s->mbox_mr), &error_abort); |
61 | |
62 | /* Framebuffer */ |
63 | sysbus_init_child_obj(obj, "fb" , &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); |
64 | object_property_add_alias(obj, "vcram-size" , OBJECT(&s->fb), "vcram-size" , |
65 | &error_abort); |
66 | |
67 | object_property_add_const_link(OBJECT(&s->fb), "dma-mr" , |
68 | OBJECT(&s->gpu_bus_mr), &error_abort); |
69 | |
70 | /* Property channel */ |
71 | sysbus_init_child_obj(obj, "property" , &s->property, sizeof(s->property), |
72 | TYPE_BCM2835_PROPERTY); |
73 | object_property_add_alias(obj, "board-rev" , OBJECT(&s->property), |
74 | "board-rev" , &error_abort); |
75 | |
76 | object_property_add_const_link(OBJECT(&s->property), "fb" , |
77 | OBJECT(&s->fb), &error_abort); |
78 | object_property_add_const_link(OBJECT(&s->property), "dma-mr" , |
79 | OBJECT(&s->gpu_bus_mr), &error_abort); |
80 | |
81 | /* Random Number Generator */ |
82 | sysbus_init_child_obj(obj, "rng" , &s->rng, sizeof(s->rng), |
83 | TYPE_BCM2835_RNG); |
84 | |
85 | /* Extended Mass Media Controller */ |
86 | sysbus_init_child_obj(obj, "sdhci" , &s->sdhci, sizeof(s->sdhci), |
87 | TYPE_SYSBUS_SDHCI); |
88 | |
89 | /* SDHOST */ |
90 | sysbus_init_child_obj(obj, "sdhost" , &s->sdhost, sizeof(s->sdhost), |
91 | TYPE_BCM2835_SDHOST); |
92 | |
93 | /* DMA Channels */ |
94 | sysbus_init_child_obj(obj, "dma" , &s->dma, sizeof(s->dma), |
95 | TYPE_BCM2835_DMA); |
96 | |
97 | object_property_add_const_link(OBJECT(&s->dma), "dma-mr" , |
98 | OBJECT(&s->gpu_bus_mr), &error_abort); |
99 | |
100 | /* GPIO */ |
101 | sysbus_init_child_obj(obj, "gpio" , &s->gpio, sizeof(s->gpio), |
102 | TYPE_BCM2835_GPIO); |
103 | |
104 | object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci" , |
105 | OBJECT(&s->sdhci.sdbus), &error_abort); |
106 | object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost" , |
107 | OBJECT(&s->sdhost.sdbus), &error_abort); |
108 | } |
109 | |
110 | static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) |
111 | { |
112 | BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); |
113 | Object *obj; |
114 | MemoryRegion *ram; |
115 | Error *err = NULL; |
116 | uint64_t ram_size, vcram_size; |
117 | int n; |
118 | |
119 | obj = object_property_get_link(OBJECT(dev), "ram" , &err); |
120 | if (obj == NULL) { |
121 | error_setg(errp, "%s: required ram link not found: %s" , |
122 | __func__, error_get_pretty(err)); |
123 | return; |
124 | } |
125 | |
126 | ram = MEMORY_REGION(obj); |
127 | ram_size = memory_region_size(ram); |
128 | |
129 | /* Map peripherals and RAM into the GPU address space. */ |
130 | memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), |
131 | "bcm2835-peripherals" , &s->peri_mr, 0, |
132 | memory_region_size(&s->peri_mr)); |
133 | |
134 | memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, |
135 | &s->peri_mr_alias, 1); |
136 | |
137 | /* RAM is aliased four times (different cache configurations) on the GPU */ |
138 | for (n = 0; n < 4; n++) { |
139 | memory_region_init_alias(&s->ram_alias[n], OBJECT(s), |
140 | "bcm2835-gpu-ram-alias[*]" , ram, 0, ram_size); |
141 | memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, |
142 | &s->ram_alias[n], 0); |
143 | } |
144 | |
145 | /* Interrupt Controller */ |
146 | object_property_set_bool(OBJECT(&s->ic), true, "realized" , &err); |
147 | if (err) { |
148 | error_propagate(errp, err); |
149 | return; |
150 | } |
151 | |
152 | memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, |
153 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); |
154 | sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); |
155 | |
156 | /* UART0 */ |
157 | qdev_prop_set_chr(DEVICE(&s->uart0), "chardev" , serial_hd(0)); |
158 | object_property_set_bool(OBJECT(&s->uart0), true, "realized" , &err); |
159 | if (err) { |
160 | error_propagate(errp, err); |
161 | return; |
162 | } |
163 | |
164 | memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, |
165 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); |
166 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, |
167 | qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, |
168 | INTERRUPT_UART)); |
169 | /* AUX / UART1 */ |
170 | qdev_prop_set_chr(DEVICE(&s->aux), "chardev" , serial_hd(1)); |
171 | |
172 | object_property_set_bool(OBJECT(&s->aux), true, "realized" , &err); |
173 | if (err) { |
174 | error_propagate(errp, err); |
175 | return; |
176 | } |
177 | |
178 | memory_region_add_subregion(&s->peri_mr, UART1_OFFSET, |
179 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); |
180 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, |
181 | qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, |
182 | INTERRUPT_AUX)); |
183 | |
184 | /* Mailboxes */ |
185 | object_property_set_bool(OBJECT(&s->mboxes), true, "realized" , &err); |
186 | if (err) { |
187 | error_propagate(errp, err); |
188 | return; |
189 | } |
190 | |
191 | memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, |
192 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); |
193 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, |
194 | qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, |
195 | INTERRUPT_ARM_MAILBOX)); |
196 | |
197 | /* Framebuffer */ |
198 | vcram_size = object_property_get_uint(OBJECT(s), "vcram-size" , &err); |
199 | if (err) { |
200 | error_propagate(errp, err); |
201 | return; |
202 | } |
203 | |
204 | object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, |
205 | "vcram-base" , &err); |
206 | if (err) { |
207 | error_propagate(errp, err); |
208 | return; |
209 | } |
210 | |
211 | object_property_set_bool(OBJECT(&s->fb), true, "realized" , &err); |
212 | if (err) { |
213 | error_propagate(errp, err); |
214 | return; |
215 | } |
216 | |
217 | memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, |
218 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); |
219 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, |
220 | qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); |
221 | |
222 | /* Property channel */ |
223 | object_property_set_bool(OBJECT(&s->property), true, "realized" , &err); |
224 | if (err) { |
225 | error_propagate(errp, err); |
226 | return; |
227 | } |
228 | |
229 | memory_region_add_subregion(&s->mbox_mr, |
230 | MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, |
231 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); |
232 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, |
233 | qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); |
234 | |
235 | /* Random Number Generator */ |
236 | object_property_set_bool(OBJECT(&s->rng), true, "realized" , &err); |
237 | if (err) { |
238 | error_propagate(errp, err); |
239 | return; |
240 | } |
241 | |
242 | memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, |
243 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); |
244 | |
245 | /* Extended Mass Media Controller |
246 | * |
247 | * Compatible with: |
248 | * - SD Host Controller Specification Version 3.0 Draft 1.0 |
249 | * - SDIO Specification Version 3.0 |
250 | * - MMC Specification Version 4.4 |
251 | * |
252 | * For the exact details please refer to the Arasan documentation: |
253 | * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf |
254 | */ |
255 | object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version" , &err); |
256 | object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg" , |
257 | &err); |
258 | object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk" , |
259 | &err); |
260 | if (err) { |
261 | error_propagate(errp, err); |
262 | return; |
263 | } |
264 | |
265 | object_property_set_bool(OBJECT(&s->sdhci), true, "realized" , &err); |
266 | if (err) { |
267 | error_propagate(errp, err); |
268 | return; |
269 | } |
270 | |
271 | memory_region_add_subregion(&s->peri_mr, EMMC_OFFSET, |
272 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); |
273 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, |
274 | qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, |
275 | INTERRUPT_ARASANSDIO)); |
276 | |
277 | /* SDHOST */ |
278 | object_property_set_bool(OBJECT(&s->sdhost), true, "realized" , &err); |
279 | if (err) { |
280 | error_propagate(errp, err); |
281 | return; |
282 | } |
283 | |
284 | memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, |
285 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); |
286 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, |
287 | qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, |
288 | INTERRUPT_SDIO)); |
289 | |
290 | /* DMA Channels */ |
291 | object_property_set_bool(OBJECT(&s->dma), true, "realized" , &err); |
292 | if (err) { |
293 | error_propagate(errp, err); |
294 | return; |
295 | } |
296 | |
297 | memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, |
298 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); |
299 | memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, |
300 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); |
301 | |
302 | for (n = 0; n <= 12; n++) { |
303 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, |
304 | qdev_get_gpio_in_named(DEVICE(&s->ic), |
305 | BCM2835_IC_GPU_IRQ, |
306 | INTERRUPT_DMA0 + n)); |
307 | } |
308 | |
309 | /* GPIO */ |
310 | object_property_set_bool(OBJECT(&s->gpio), true, "realized" , &err); |
311 | if (err) { |
312 | error_propagate(errp, err); |
313 | return; |
314 | } |
315 | |
316 | memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, |
317 | sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); |
318 | |
319 | object_property_add_alias(OBJECT(s), "sd-bus" , OBJECT(&s->gpio), "sd-bus" , |
320 | &err); |
321 | if (err) { |
322 | error_propagate(errp, err); |
323 | return; |
324 | } |
325 | } |
326 | |
327 | static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) |
328 | { |
329 | DeviceClass *dc = DEVICE_CLASS(oc); |
330 | |
331 | dc->realize = bcm2835_peripherals_realize; |
332 | } |
333 | |
334 | static const TypeInfo bcm2835_peripherals_type_info = { |
335 | .name = TYPE_BCM2835_PERIPHERALS, |
336 | .parent = TYPE_SYS_BUS_DEVICE, |
337 | .instance_size = sizeof(BCM2835PeripheralState), |
338 | .instance_init = bcm2835_peripherals_init, |
339 | .class_init = bcm2835_peripherals_class_init, |
340 | }; |
341 | |
342 | static void bcm2835_peripherals_register_types(void) |
343 | { |
344 | type_register_static(&bcm2835_peripherals_type_info); |
345 | } |
346 | |
347 | type_init(bcm2835_peripherals_register_types) |
348 | |