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 } 133 134 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 135 { 136 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 137 Object *obj; 138 MemoryRegion *ram; 139 Error *err = NULL; 140 uint64_t ram_size, vcram_size; 141 int n; 142 143 obj = object_property_get_link(OBJECT(dev), "ram", &err); 144 if (obj == NULL) { 145 error_setg(errp, "%s: required ram link not found: %s", 146 __func__, error_get_pretty(err)); 147 return; 148 } 149 150 ram = MEMORY_REGION(obj); 151 ram_size = memory_region_size(ram); 152 153 /* Map peripherals and RAM into the GPU address space. */ 154 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 155 "bcm2835-peripherals", &s->peri_mr, 0, 156 memory_region_size(&s->peri_mr)); 157 158 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 159 &s->peri_mr_alias, 1); 160 161 /* RAM is aliased four times (different cache configurations) on the GPU */ 162 for (n = 0; n < 4; n++) { 163 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 164 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 165 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 166 &s->ram_alias[n], 0); 167 } 168 169 /* Interrupt Controller */ 170 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 171 if (err) { 172 error_propagate(errp, err); 173 return; 174 } 175 176 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 177 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 178 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 179 180 /* Sys Timer */ 181 object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err); 182 if (err) { 183 error_propagate(errp, err); 184 return; 185 } 186 memory_region_add_subregion(&s->peri_mr, ST_OFFSET, 187 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0)); 188 sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0, 189 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 190 INTERRUPT_ARM_TIMER)); 191 192 /* UART0 */ 193 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 194 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 195 if (err) { 196 error_propagate(errp, err); 197 return; 198 } 199 200 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 201 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 202 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 203 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 204 INTERRUPT_UART0)); 205 206 /* AUX / UART1 */ 207 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 208 209 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 210 if (err) { 211 error_propagate(errp, err); 212 return; 213 } 214 215 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 216 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 217 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 218 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 219 INTERRUPT_AUX)); 220 221 /* Mailboxes */ 222 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 223 if (err) { 224 error_propagate(errp, err); 225 return; 226 } 227 228 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 229 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 230 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 231 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 232 INTERRUPT_ARM_MAILBOX)); 233 234 /* Framebuffer */ 235 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 236 if (err) { 237 error_propagate(errp, err); 238 return; 239 } 240 241 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 242 "vcram-base", &err); 243 if (err) { 244 error_propagate(errp, err); 245 return; 246 } 247 248 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 249 if (err) { 250 error_propagate(errp, err); 251 return; 252 } 253 254 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 255 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 256 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 257 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 258 259 /* Property channel */ 260 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 261 if (err) { 262 error_propagate(errp, err); 263 return; 264 } 265 266 memory_region_add_subregion(&s->mbox_mr, 267 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 268 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 269 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 270 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 271 272 /* Random Number Generator */ 273 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 274 if (err) { 275 error_propagate(errp, err); 276 return; 277 } 278 279 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 280 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 281 282 /* Extended Mass Media Controller 283 * 284 * Compatible with: 285 * - SD Host Controller Specification Version 3.0 Draft 1.0 286 * - SDIO Specification Version 3.0 287 * - MMC Specification Version 4.4 288 * 289 * For the exact details please refer to the Arasan documentation: 290 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 291 */ 292 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 293 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 294 &err); 295 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 296 &err); 297 if (err) { 298 error_propagate(errp, err); 299 return; 300 } 301 302 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 303 if (err) { 304 error_propagate(errp, err); 305 return; 306 } 307 308 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 309 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 310 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 311 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 312 INTERRUPT_ARASANSDIO)); 313 314 /* SDHOST */ 315 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 316 if (err) { 317 error_propagate(errp, err); 318 return; 319 } 320 321 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 322 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 323 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 324 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 325 INTERRUPT_SDIO)); 326 327 /* DMA Channels */ 328 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 329 if (err) { 330 error_propagate(errp, err); 331 return; 332 } 333 334 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 335 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 336 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 337 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 338 339 for (n = 0; n <= 12; n++) { 340 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 341 qdev_get_gpio_in_named(DEVICE(&s->ic), 342 BCM2835_IC_GPU_IRQ, 343 INTERRUPT_DMA0 + n)); 344 } 345 346 /* THERMAL */ 347 object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err); 348 if (err) { 349 error_propagate(errp, err); 350 return; 351 } 352 memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, 353 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); 354 355 /* GPIO */ 356 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 357 if (err) { 358 error_propagate(errp, err); 359 return; 360 } 361 362 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 363 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 364 365 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus"); 366 367 /* Mphi */ 368 object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err); 369 if (err) { 370 error_propagate(errp, err); 371 return; 372 } 373 374 memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET, 375 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0)); 376 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0, 377 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 378 INTERRUPT_HOSTPORT)); 379 380 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 381 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 382 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 383 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 384 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 385 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 386 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 387 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 388 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 389 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 390 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 391 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 392 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 393 create_unimp(s, &s->dwc2, "dwc-usb2", USB_OTG_OFFSET, 0x1000); 394 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 395 } 396 397 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 398 { 399 DeviceClass *dc = DEVICE_CLASS(oc); 400 401 dc->realize = bcm2835_peripherals_realize; 402 } 403 404 static const TypeInfo bcm2835_peripherals_type_info = { 405 .name = TYPE_BCM2835_PERIPHERALS, 406 .parent = TYPE_SYS_BUS_DEVICE, 407 .instance_size = sizeof(BCM2835PeripheralState), 408 .instance_init = bcm2835_peripherals_init, 409 .class_init = bcm2835_peripherals_class_init, 410 }; 411 412 static void bcm2835_peripherals_register_types(void) 413 { 414 type_register_static(&bcm2835_peripherals_type_info); 415 } 416 417 type_init(bcm2835_peripherals_register_types) 418