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