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, 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); 38 } 39 40 static void bcm2835_peripherals_init(Object *obj) 41 { 42 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj); 43 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); 47 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); 50 51 /* Internal memory region for request/response communication with 52 * mailbox-addressable peripherals (not exported) 53 */ 54 memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox", 55 MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); 56 57 /* Interrupt Controller */ 58 sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); 59 60 /* SYS Timer */ 61 sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr), 62 TYPE_BCM2835_SYSTIMER); 63 64 /* UART0 */ 65 sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), 66 TYPE_PL011); 67 68 /* AUX / UART1 */ 69 sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), 70 TYPE_BCM2835_AUX); 71 72 /* Mailboxes */ 73 sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), 74 TYPE_BCM2835_MBOX); 75 76 object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", 77 OBJECT(&s->mbox_mr)); 78 79 /* Framebuffer */ 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"); 82 83 object_property_add_const_link(OBJECT(&s->fb), "dma-mr", 84 OBJECT(&s->gpu_bus_mr)); 85 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), 90 "board-rev"); 91 92 object_property_add_const_link(OBJECT(&s->property), "fb", 93 OBJECT(&s->fb)); 94 object_property_add_const_link(OBJECT(&s->property), "dma-mr", 95 OBJECT(&s->gpu_bus_mr)); 96 97 /* Random Number Generator */ 98 sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), 99 TYPE_BCM2835_RNG); 100 101 /* Extended Mass Media Controller */ 102 sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), 103 TYPE_SYSBUS_SDHCI); 104 105 /* SDHOST */ 106 sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), 107 TYPE_BCM2835_SDHOST); 108 109 /* DMA Channels */ 110 sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), 111 TYPE_BCM2835_DMA); 112 113 object_property_add_const_link(OBJECT(&s->dma), "dma-mr", 114 OBJECT(&s->gpu_bus_mr)); 115 116 /* Thermal */ 117 sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal), 118 TYPE_BCM2835_THERMAL); 119 120 /* GPIO */ 121 sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), 122 TYPE_BCM2835_GPIO); 123 124 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)); 128 129 /* Mphi */ 130 sysbus_init_child_obj(obj, "mphi", &s->mphi, sizeof(s->mphi), 131 TYPE_BCM2835_MPHI); 132 133 /* DWC2 */ 134 sysbus_init_child_obj(obj, "dwc2", &s->dwc2, sizeof(s->dwc2), 135 TYPE_DWC2_USB); 136 137 object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr", 138 OBJECT(&s->gpu_bus_mr)); 139 } 140 141 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 142 { 143 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 144 Object *obj; 145 MemoryRegion *ram; 146 Error *err = NULL; 147 uint64_t ram_size, vcram_size; 148 int n; 149 150 obj = object_property_get_link(OBJECT(dev), "ram", &err); 151 if (obj == NULL) { 152 error_setg(errp, "%s: required ram link not found: %s", 153 __func__, error_get_pretty(err)); 154 return; 155 } 156 157 ram = MEMORY_REGION(obj); 158 ram_size = memory_region_size(ram); 159 160 /* Map peripherals and RAM into the GPU address space. */ 161 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 162 "bcm2835-peripherals", &s->peri_mr, 0, 163 memory_region_size(&s->peri_mr)); 164 165 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 166 &s->peri_mr_alias, 1); 167 168 /* RAM is aliased four times (different cache configurations) on the GPU */ 169 for (n = 0; n < 4; n++) { 170 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 171 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 172 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 173 &s->ram_alias[n], 0); 174 } 175 176 /* Interrupt Controller */ 177 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 178 if (err) { 179 error_propagate(errp, err); 180 return; 181 } 182 183 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 184 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 185 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 186 187 /* Sys Timer */ 188 object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err); 189 if (err) { 190 error_propagate(errp, err); 191 return; 192 } 193 memory_region_add_subregion(&s->peri_mr, ST_OFFSET, 194 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0)); 195 sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0, 196 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 197 INTERRUPT_ARM_TIMER)); 198 199 /* UART0 */ 200 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 201 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 202 if (err) { 203 error_propagate(errp, err); 204 return; 205 } 206 207 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 208 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 209 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 210 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 211 INTERRUPT_UART0)); 212 213 /* AUX / UART1 */ 214 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 215 216 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 217 if (err) { 218 error_propagate(errp, err); 219 return; 220 } 221 222 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 223 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 224 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 225 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 226 INTERRUPT_AUX)); 227 228 /* Mailboxes */ 229 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 230 if (err) { 231 error_propagate(errp, err); 232 return; 233 } 234 235 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 236 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 237 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 238 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 239 INTERRUPT_ARM_MAILBOX)); 240 241 /* Framebuffer */ 242 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 243 if (err) { 244 error_propagate(errp, err); 245 return; 246 } 247 248 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 249 "vcram-base", &err); 250 if (err) { 251 error_propagate(errp, err); 252 return; 253 } 254 255 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 256 if (err) { 257 error_propagate(errp, err); 258 return; 259 } 260 261 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 262 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 263 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 264 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 265 266 /* Property channel */ 267 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 268 if (err) { 269 error_propagate(errp, err); 270 return; 271 } 272 273 memory_region_add_subregion(&s->mbox_mr, 274 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 275 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 276 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 277 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 278 279 /* Random Number Generator */ 280 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 281 if (err) { 282 error_propagate(errp, err); 283 return; 284 } 285 286 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 287 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 288 289 /* Extended Mass Media Controller 290 * 291 * Compatible with: 292 * - SD Host Controller Specification Version 3.0 Draft 1.0 293 * - SDIO Specification Version 3.0 294 * - MMC Specification Version 4.4 295 * 296 * For the exact details please refer to the Arasan documentation: 297 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 298 */ 299 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 300 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 301 &err); 302 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 303 &err); 304 if (err) { 305 error_propagate(errp, err); 306 return; 307 } 308 309 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 310 if (err) { 311 error_propagate(errp, err); 312 return; 313 } 314 315 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 316 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 317 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 318 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 319 INTERRUPT_ARASANSDIO)); 320 321 /* SDHOST */ 322 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 323 if (err) { 324 error_propagate(errp, err); 325 return; 326 } 327 328 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 329 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 330 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 331 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 332 INTERRUPT_SDIO)); 333 334 /* DMA Channels */ 335 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 336 if (err) { 337 error_propagate(errp, err); 338 return; 339 } 340 341 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 342 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 343 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 344 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 345 346 for (n = 0; n <= 12; n++) { 347 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 348 qdev_get_gpio_in_named(DEVICE(&s->ic), 349 BCM2835_IC_GPU_IRQ, 350 INTERRUPT_DMA0 + n)); 351 } 352 353 /* THERMAL */ 354 object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err); 355 if (err) { 356 error_propagate(errp, err); 357 return; 358 } 359 memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, 360 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); 361 362 /* GPIO */ 363 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 364 if (err) { 365 error_propagate(errp, err); 366 return; 367 } 368 369 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 370 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 371 372 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus"); 373 374 /* Mphi */ 375 object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err); 376 if (err) { 377 error_propagate(errp, err); 378 return; 379 } 380 381 memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET, 382 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0)); 383 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0, 384 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 385 INTERRUPT_HOSTPORT)); 386 387 /* DWC2 */ 388 object_property_set_bool(OBJECT(&s->dwc2), true, "realized", &err); 389 if (err) { 390 error_propagate(errp, err); 391 return; 392 } 393 394 memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET, 395 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0)); 396 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0, 397 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 398 INTERRUPT_USB)); 399 400 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 401 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 402 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 403 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 404 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 405 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 406 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 407 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 408 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 409 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 410 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 411 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 412 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 413 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 414 } 415 416 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 417 { 418 DeviceClass *dc = DEVICE_CLASS(oc); 419 420 dc->realize = bcm2835_peripherals_realize; 421 } 422 423 static const TypeInfo bcm2835_peripherals_type_info = { 424 .name = TYPE_BCM2835_PERIPHERALS, 425 .parent = TYPE_SYS_BUS_DEVICE, 426 .instance_size = sizeof(BCM2835PeripheralState), 427 .instance_init = bcm2835_peripherals_init, 428 .class_init = bcm2835_peripherals_class_init, 429 }; 430 431 static void bcm2835_peripherals_register_types(void) 432 { 433 type_register_static(&bcm2835_peripherals_type_info); 434 } 435 436 type_init(bcm2835_peripherals_register_types) 437