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 sysbus_init_child_obj(OBJECT(ps), name, uds, sizeof(*uds), 31 TYPE_UNIMPLEMENTED_DEVICE); 32 qdev_prop_set_string(DEVICE(uds), "name", name); 33 qdev_prop_set_uint64(DEVICE(uds), "size", size); 34 object_property_set_bool(OBJECT(uds), true, "realized", &error_fatal); 35 memory_region_add_subregion_overlap(&ps->peri_mr, ofs, 36 sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000); 37 } 38 39 static void bcm2835_peripherals_init(Object *obj) 40 { 41 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj); 42 43 /* Memory region for peripheral devices, which we export to our parent */ 44 memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000); 45 sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr); 46 47 /* Internal memory region for peripheral bus addresses (not exported) */ 48 memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32); 49 50 /* Internal memory region for request/response communication with 51 * mailbox-addressable peripherals (not exported) 52 */ 53 memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox", 54 MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); 55 56 /* Interrupt Controller */ 57 sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); 58 59 /* SYS Timer */ 60 sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr), 61 TYPE_BCM2835_SYSTIMER); 62 63 /* UART0 */ 64 sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), 65 TYPE_PL011); 66 67 /* AUX / UART1 */ 68 sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), 69 TYPE_BCM2835_AUX); 70 71 /* Mailboxes */ 72 sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), 73 TYPE_BCM2835_MBOX); 74 75 object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", 76 OBJECT(&s->mbox_mr)); 77 78 /* Framebuffer */ 79 sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); 80 object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size"); 81 82 object_property_add_const_link(OBJECT(&s->fb), "dma-mr", 83 OBJECT(&s->gpu_bus_mr)); 84 85 /* Property channel */ 86 sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property), 87 TYPE_BCM2835_PROPERTY); 88 object_property_add_alias(obj, "board-rev", OBJECT(&s->property), 89 "board-rev"); 90 91 object_property_add_const_link(OBJECT(&s->property), "fb", 92 OBJECT(&s->fb)); 93 object_property_add_const_link(OBJECT(&s->property), "dma-mr", 94 OBJECT(&s->gpu_bus_mr)); 95 96 /* Random Number Generator */ 97 sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), 98 TYPE_BCM2835_RNG); 99 100 /* Extended Mass Media Controller */ 101 sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), 102 TYPE_SYSBUS_SDHCI); 103 104 /* SDHOST */ 105 sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), 106 TYPE_BCM2835_SDHOST); 107 108 /* DMA Channels */ 109 sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), 110 TYPE_BCM2835_DMA); 111 112 object_property_add_const_link(OBJECT(&s->dma), "dma-mr", 113 OBJECT(&s->gpu_bus_mr)); 114 115 /* Thermal */ 116 sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal), 117 TYPE_BCM2835_THERMAL); 118 119 /* GPIO */ 120 sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), 121 TYPE_BCM2835_GPIO); 122 123 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci", 124 OBJECT(&s->sdhci.sdbus)); 125 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost", 126 OBJECT(&s->sdhost.sdbus)); 127 128 /* Mphi */ 129 sysbus_init_child_obj(obj, "mphi", &s->mphi, sizeof(s->mphi), 130 TYPE_BCM2835_MPHI); 131 132 /* DWC2 */ 133 sysbus_init_child_obj(obj, "dwc2", &s->dwc2, sizeof(s->dwc2), 134 TYPE_DWC2_USB); 135 136 object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr", 137 OBJECT(&s->gpu_bus_mr)); 138 } 139 140 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 141 { 142 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 143 Object *obj; 144 MemoryRegion *ram; 145 Error *err = NULL; 146 uint64_t ram_size, vcram_size; 147 int n; 148 149 obj = object_property_get_link(OBJECT(dev), "ram", &err); 150 if (obj == NULL) { 151 error_setg(errp, "%s: required ram link not found: %s", 152 __func__, error_get_pretty(err)); 153 return; 154 } 155 156 ram = MEMORY_REGION(obj); 157 ram_size = memory_region_size(ram); 158 159 /* Map peripherals and RAM into the GPU address space. */ 160 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 161 "bcm2835-peripherals", &s->peri_mr, 0, 162 memory_region_size(&s->peri_mr)); 163 164 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 165 &s->peri_mr_alias, 1); 166 167 /* RAM is aliased four times (different cache configurations) on the GPU */ 168 for (n = 0; n < 4; n++) { 169 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 170 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 171 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 172 &s->ram_alias[n], 0); 173 } 174 175 /* Interrupt Controller */ 176 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 177 if (err) { 178 error_propagate(errp, err); 179 return; 180 } 181 182 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 183 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 184 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 185 186 /* Sys Timer */ 187 object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err); 188 if (err) { 189 error_propagate(errp, err); 190 return; 191 } 192 memory_region_add_subregion(&s->peri_mr, ST_OFFSET, 193 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0)); 194 sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0, 195 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 196 INTERRUPT_ARM_TIMER)); 197 198 /* UART0 */ 199 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 200 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 201 if (err) { 202 error_propagate(errp, err); 203 return; 204 } 205 206 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 207 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 208 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 209 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 210 INTERRUPT_UART0)); 211 212 /* AUX / UART1 */ 213 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 214 215 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 216 if (err) { 217 error_propagate(errp, err); 218 return; 219 } 220 221 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 222 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 223 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 224 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 225 INTERRUPT_AUX)); 226 227 /* Mailboxes */ 228 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 229 if (err) { 230 error_propagate(errp, err); 231 return; 232 } 233 234 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 235 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 236 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 237 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 238 INTERRUPT_ARM_MAILBOX)); 239 240 /* Framebuffer */ 241 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 242 if (err) { 243 error_propagate(errp, err); 244 return; 245 } 246 247 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 248 "vcram-base", &err); 249 if (err) { 250 error_propagate(errp, err); 251 return; 252 } 253 254 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 255 if (err) { 256 error_propagate(errp, err); 257 return; 258 } 259 260 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 261 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 262 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 263 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 264 265 /* Property channel */ 266 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 267 if (err) { 268 error_propagate(errp, err); 269 return; 270 } 271 272 memory_region_add_subregion(&s->mbox_mr, 273 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 274 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 275 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 276 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 277 278 /* Random Number Generator */ 279 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 280 if (err) { 281 error_propagate(errp, err); 282 return; 283 } 284 285 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 286 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 287 288 /* Extended Mass Media Controller 289 * 290 * Compatible with: 291 * - SD Host Controller Specification Version 3.0 Draft 1.0 292 * - SDIO Specification Version 3.0 293 * - MMC Specification Version 4.4 294 * 295 * For the exact details please refer to the Arasan documentation: 296 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 297 */ 298 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 299 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 300 &err); 301 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 302 &err); 303 if (err) { 304 error_propagate(errp, err); 305 return; 306 } 307 308 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 309 if (err) { 310 error_propagate(errp, err); 311 return; 312 } 313 314 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 315 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 316 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 317 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 318 INTERRUPT_ARASANSDIO)); 319 320 /* SDHOST */ 321 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 322 if (err) { 323 error_propagate(errp, err); 324 return; 325 } 326 327 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 328 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 329 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 330 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 331 INTERRUPT_SDIO)); 332 333 /* DMA Channels */ 334 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 335 if (err) { 336 error_propagate(errp, err); 337 return; 338 } 339 340 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 341 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 342 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 343 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 344 345 for (n = 0; n <= 12; n++) { 346 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 347 qdev_get_gpio_in_named(DEVICE(&s->ic), 348 BCM2835_IC_GPU_IRQ, 349 INTERRUPT_DMA0 + n)); 350 } 351 352 /* THERMAL */ 353 object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err); 354 if (err) { 355 error_propagate(errp, err); 356 return; 357 } 358 memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, 359 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); 360 361 /* GPIO */ 362 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 363 if (err) { 364 error_propagate(errp, err); 365 return; 366 } 367 368 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 369 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 370 371 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus"); 372 373 /* Mphi */ 374 object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err); 375 if (err) { 376 error_propagate(errp, err); 377 return; 378 } 379 380 memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET, 381 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0)); 382 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0, 383 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 384 INTERRUPT_HOSTPORT)); 385 386 /* DWC2 */ 387 object_property_set_bool(OBJECT(&s->dwc2), true, "realized", &err); 388 if (err) { 389 error_propagate(errp, err); 390 return; 391 } 392 393 memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET, 394 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0)); 395 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0, 396 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 397 INTERRUPT_USB)); 398 399 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 400 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 401 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 402 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 403 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 404 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 405 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 406 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 407 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 408 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 409 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 410 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 411 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 412 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 413 } 414 415 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 416 { 417 DeviceClass *dc = DEVICE_CLASS(oc); 418 419 dc->realize = bcm2835_peripherals_realize; 420 } 421 422 static const TypeInfo bcm2835_peripherals_type_info = { 423 .name = TYPE_BCM2835_PERIPHERALS, 424 .parent = TYPE_SYS_BUS_DEVICE, 425 .instance_size = sizeof(BCM2835PeripheralState), 426 .instance_init = bcm2835_peripherals_init, 427 .class_init = bcm2835_peripherals_class_init, 428 }; 429 430 static void bcm2835_peripherals_register_types(void) 431 { 432 type_register_static(&bcm2835_peripherals_type_info); 433 } 434 435 type_init(bcm2835_peripherals_register_types) 436