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 work is licensed under the terms of the GNU GPL, version 2 or later. 9 * See the COPYING file in the top-level directory. 10 */ 11 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" 19 20 /* Peripheral base address on the VC (GPU) system bus */ 21 #define BCM2835_VC_PERI_BASE 0x7e000000 22 23 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */ 24 #define BCM2835_SDHC_CAPAREG 0x52134b4 25 26 static void create_unimp(BCM2835PeripheralState *ps, 27 UnimplementedDeviceState *uds, 28 const char *name, hwaddr ofs, hwaddr size) 29 { 30 object_initialize_child(OBJECT(ps), name, uds, TYPE_UNIMPLEMENTED_DEVICE); 31 qdev_prop_set_string(DEVICE(uds), "name", name); 32 qdev_prop_set_uint64(DEVICE(uds), "size", size); 33 sysbus_realize(SYS_BUS_DEVICE(uds), &error_fatal); 34 memory_region_add_subregion_overlap(&ps->peri_mr, ofs, 35 sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000); 36 } 37 38 static void bcm2835_peripherals_init(Object *obj) 39 { 40 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj); 41 42 /* Memory region for peripheral devices, which we export to our parent */ 43 memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000); 44 sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr); 45 46 /* Internal memory region for peripheral bus addresses (not exported) */ 47 memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32); 48 49 /* Internal memory region for request/response communication with 50 * mailbox-addressable peripherals (not exported) 51 */ 52 memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox", 53 MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); 54 55 /* Interrupt Controller */ 56 sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); 57 58 /* SYS Timer */ 59 sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr), 60 TYPE_BCM2835_SYSTIMER); 61 62 /* UART0 */ 63 sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), 64 TYPE_PL011); 65 66 /* AUX / UART1 */ 67 sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), 68 TYPE_BCM2835_AUX); 69 70 /* Mailboxes */ 71 sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), 72 TYPE_BCM2835_MBOX); 73 74 object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", 75 OBJECT(&s->mbox_mr)); 76 77 /* Framebuffer */ 78 sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); 79 object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size"); 80 81 object_property_add_const_link(OBJECT(&s->fb), "dma-mr", 82 OBJECT(&s->gpu_bus_mr)); 83 84 /* Property channel */ 85 sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property), 86 TYPE_BCM2835_PROPERTY); 87 object_property_add_alias(obj, "board-rev", OBJECT(&s->property), 88 "board-rev"); 89 90 object_property_add_const_link(OBJECT(&s->property), "fb", 91 OBJECT(&s->fb)); 92 object_property_add_const_link(OBJECT(&s->property), "dma-mr", 93 OBJECT(&s->gpu_bus_mr)); 94 95 /* Random Number Generator */ 96 sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), 97 TYPE_BCM2835_RNG); 98 99 /* Extended Mass Media Controller */ 100 sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), 101 TYPE_SYSBUS_SDHCI); 102 103 /* SDHOST */ 104 sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), 105 TYPE_BCM2835_SDHOST); 106 107 /* DMA Channels */ 108 sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), 109 TYPE_BCM2835_DMA); 110 111 object_property_add_const_link(OBJECT(&s->dma), "dma-mr", 112 OBJECT(&s->gpu_bus_mr)); 113 114 /* Thermal */ 115 sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal), 116 TYPE_BCM2835_THERMAL); 117 118 /* GPIO */ 119 sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), 120 TYPE_BCM2835_GPIO); 121 122 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci", 123 OBJECT(&s->sdhci.sdbus)); 124 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost", 125 OBJECT(&s->sdhost.sdbus)); 126 127 /* Mphi */ 128 sysbus_init_child_obj(obj, "mphi", &s->mphi, sizeof(s->mphi), 129 TYPE_BCM2835_MPHI); 130 131 /* DWC2 */ 132 sysbus_init_child_obj(obj, "dwc2", &s->dwc2, sizeof(s->dwc2), 133 TYPE_DWC2_USB); 134 135 object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr", 136 OBJECT(&s->gpu_bus_mr)); 137 } 138 139 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 140 { 141 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 142 Object *obj; 143 MemoryRegion *ram; 144 Error *err = NULL; 145 uint64_t ram_size, vcram_size; 146 int n; 147 148 obj = object_property_get_link(OBJECT(dev), "ram", &err); 149 if (obj == NULL) { 150 error_setg(errp, "%s: required ram link not found: %s", 151 __func__, error_get_pretty(err)); 152 return; 153 } 154 155 ram = MEMORY_REGION(obj); 156 ram_size = memory_region_size(ram); 157 158 /* Map peripherals and RAM into the GPU address space. */ 159 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 160 "bcm2835-peripherals", &s->peri_mr, 0, 161 memory_region_size(&s->peri_mr)); 162 163 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 164 &s->peri_mr_alias, 1); 165 166 /* RAM is aliased four times (different cache configurations) on the GPU */ 167 for (n = 0; n < 4; n++) { 168 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 169 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 170 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 171 &s->ram_alias[n], 0); 172 } 173 174 /* Interrupt Controller */ 175 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 176 if (err) { 177 error_propagate(errp, err); 178 return; 179 } 180 181 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 182 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 183 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 184 185 /* Sys Timer */ 186 object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err); 187 if (err) { 188 error_propagate(errp, err); 189 return; 190 } 191 memory_region_add_subregion(&s->peri_mr, ST_OFFSET, 192 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0)); 193 sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0, 194 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 195 INTERRUPT_ARM_TIMER)); 196 197 /* UART0 */ 198 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 199 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 200 if (err) { 201 error_propagate(errp, err); 202 return; 203 } 204 205 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 206 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 207 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 208 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 209 INTERRUPT_UART0)); 210 211 /* AUX / UART1 */ 212 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 213 214 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 215 if (err) { 216 error_propagate(errp, err); 217 return; 218 } 219 220 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 221 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 222 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 223 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 224 INTERRUPT_AUX)); 225 226 /* Mailboxes */ 227 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 228 if (err) { 229 error_propagate(errp, err); 230 return; 231 } 232 233 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 234 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 235 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 236 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 237 INTERRUPT_ARM_MAILBOX)); 238 239 /* Framebuffer */ 240 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 241 if (err) { 242 error_propagate(errp, err); 243 return; 244 } 245 246 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 247 "vcram-base", &err); 248 if (err) { 249 error_propagate(errp, err); 250 return; 251 } 252 253 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 254 if (err) { 255 error_propagate(errp, err); 256 return; 257 } 258 259 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 260 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 261 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 262 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 263 264 /* Property channel */ 265 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 266 if (err) { 267 error_propagate(errp, err); 268 return; 269 } 270 271 memory_region_add_subregion(&s->mbox_mr, 272 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 273 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 274 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 275 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 276 277 /* Random Number Generator */ 278 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 279 if (err) { 280 error_propagate(errp, err); 281 return; 282 } 283 284 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 285 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 286 287 /* Extended Mass Media Controller 288 * 289 * Compatible with: 290 * - SD Host Controller Specification Version 3.0 Draft 1.0 291 * - SDIO Specification Version 3.0 292 * - MMC Specification Version 4.4 293 * 294 * For the exact details please refer to the Arasan documentation: 295 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 296 */ 297 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 298 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 299 &err); 300 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 301 &err); 302 if (err) { 303 error_propagate(errp, err); 304 return; 305 } 306 307 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 308 if (err) { 309 error_propagate(errp, err); 310 return; 311 } 312 313 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 314 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 315 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 316 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 317 INTERRUPT_ARASANSDIO)); 318 319 /* SDHOST */ 320 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 321 if (err) { 322 error_propagate(errp, err); 323 return; 324 } 325 326 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 327 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 328 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 329 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 330 INTERRUPT_SDIO)); 331 332 /* DMA Channels */ 333 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 334 if (err) { 335 error_propagate(errp, err); 336 return; 337 } 338 339 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 340 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 341 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 342 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 343 344 for (n = 0; n <= 12; n++) { 345 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 346 qdev_get_gpio_in_named(DEVICE(&s->ic), 347 BCM2835_IC_GPU_IRQ, 348 INTERRUPT_DMA0 + n)); 349 } 350 351 /* THERMAL */ 352 object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err); 353 if (err) { 354 error_propagate(errp, err); 355 return; 356 } 357 memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, 358 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); 359 360 /* GPIO */ 361 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 362 if (err) { 363 error_propagate(errp, err); 364 return; 365 } 366 367 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 368 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 369 370 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus"); 371 372 /* Mphi */ 373 object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err); 374 if (err) { 375 error_propagate(errp, err); 376 return; 377 } 378 379 memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET, 380 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0)); 381 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0, 382 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 383 INTERRUPT_HOSTPORT)); 384 385 /* DWC2 */ 386 object_property_set_bool(OBJECT(&s->dwc2), true, "realized", &err); 387 if (err) { 388 error_propagate(errp, err); 389 return; 390 } 391 392 memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET, 393 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0)); 394 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0, 395 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 396 INTERRUPT_USB)); 397 398 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 399 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 400 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 401 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 402 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 403 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 404 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 405 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 406 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 407 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 408 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 409 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 410 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 411 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 412 } 413 414 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 415 { 416 DeviceClass *dc = DEVICE_CLASS(oc); 417 418 dc->realize = bcm2835_peripherals_realize; 419 } 420 421 static const TypeInfo bcm2835_peripherals_type_info = { 422 .name = TYPE_BCM2835_PERIPHERALS, 423 .parent = TYPE_SYS_BUS_DEVICE, 424 .instance_size = sizeof(BCM2835PeripheralState), 425 .instance_init = bcm2835_peripherals_init, 426 .class_init = bcm2835_peripherals_class_init, 427 }; 428 429 static void bcm2835_peripherals_register_types(void) 430 { 431 type_register_static(&bcm2835_peripherals_type_info); 432 } 433 434 type_init(bcm2835_peripherals_register_types) 435