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 object_property_add_child(obj, "peripheral-io", OBJECT(&s->peri_mr), NULL); 47 sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr); 48 49 /* Internal memory region for peripheral bus addresses (not exported) */ 50 memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32); 51 object_property_add_child(obj, "gpu-bus", OBJECT(&s->gpu_bus_mr), NULL); 52 53 /* Internal memory region for request/response communication with 54 * mailbox-addressable peripherals (not exported) 55 */ 56 memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox", 57 MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); 58 59 /* Interrupt Controller */ 60 sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); 61 62 /* SYS Timer */ 63 sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr), 64 TYPE_BCM2835_SYSTIMER); 65 66 /* UART0 */ 67 sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), 68 TYPE_PL011); 69 70 /* AUX / UART1 */ 71 sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), 72 TYPE_BCM2835_AUX); 73 74 /* Mailboxes */ 75 sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), 76 TYPE_BCM2835_MBOX); 77 78 object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", 79 OBJECT(&s->mbox_mr), &error_abort); 80 81 /* Framebuffer */ 82 sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); 83 object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size", 84 &error_abort); 85 86 object_property_add_const_link(OBJECT(&s->fb), "dma-mr", 87 OBJECT(&s->gpu_bus_mr), &error_abort); 88 89 /* Property channel */ 90 sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property), 91 TYPE_BCM2835_PROPERTY); 92 object_property_add_alias(obj, "board-rev", OBJECT(&s->property), 93 "board-rev", &error_abort); 94 95 object_property_add_const_link(OBJECT(&s->property), "fb", 96 OBJECT(&s->fb), &error_abort); 97 object_property_add_const_link(OBJECT(&s->property), "dma-mr", 98 OBJECT(&s->gpu_bus_mr), &error_abort); 99 100 /* Random Number Generator */ 101 sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), 102 TYPE_BCM2835_RNG); 103 104 /* Extended Mass Media Controller */ 105 sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), 106 TYPE_SYSBUS_SDHCI); 107 108 /* SDHOST */ 109 sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), 110 TYPE_BCM2835_SDHOST); 111 112 /* DMA Channels */ 113 sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), 114 TYPE_BCM2835_DMA); 115 116 object_property_add_const_link(OBJECT(&s->dma), "dma-mr", 117 OBJECT(&s->gpu_bus_mr), &error_abort); 118 119 /* Thermal */ 120 sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal), 121 TYPE_BCM2835_THERMAL); 122 123 /* GPIO */ 124 sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), 125 TYPE_BCM2835_GPIO); 126 127 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci", 128 OBJECT(&s->sdhci.sdbus), &error_abort); 129 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost", 130 OBJECT(&s->sdhost.sdbus), &error_abort); 131 } 132 133 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 134 { 135 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 136 Object *obj; 137 MemoryRegion *ram; 138 Error *err = NULL; 139 uint64_t ram_size, vcram_size; 140 int n; 141 142 obj = object_property_get_link(OBJECT(dev), "ram", &err); 143 if (obj == NULL) { 144 error_setg(errp, "%s: required ram link not found: %s", 145 __func__, error_get_pretty(err)); 146 return; 147 } 148 149 ram = MEMORY_REGION(obj); 150 ram_size = memory_region_size(ram); 151 152 /* Map peripherals and RAM into the GPU address space. */ 153 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 154 "bcm2835-peripherals", &s->peri_mr, 0, 155 memory_region_size(&s->peri_mr)); 156 157 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 158 &s->peri_mr_alias, 1); 159 160 /* RAM is aliased four times (different cache configurations) on the GPU */ 161 for (n = 0; n < 4; n++) { 162 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 163 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 164 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 165 &s->ram_alias[n], 0); 166 } 167 168 /* Interrupt Controller */ 169 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 170 if (err) { 171 error_propagate(errp, err); 172 return; 173 } 174 175 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 176 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 177 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 178 179 /* Sys Timer */ 180 object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err); 181 if (err) { 182 error_propagate(errp, err); 183 return; 184 } 185 memory_region_add_subregion(&s->peri_mr, ST_OFFSET, 186 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0)); 187 sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0, 188 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 189 INTERRUPT_ARM_TIMER)); 190 191 /* UART0 */ 192 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 193 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 194 if (err) { 195 error_propagate(errp, err); 196 return; 197 } 198 199 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 200 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 201 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 202 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 203 INTERRUPT_UART0)); 204 205 /* AUX / UART1 */ 206 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 207 208 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 209 if (err) { 210 error_propagate(errp, err); 211 return; 212 } 213 214 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 215 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 216 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 217 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 218 INTERRUPT_AUX)); 219 220 /* Mailboxes */ 221 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 222 if (err) { 223 error_propagate(errp, err); 224 return; 225 } 226 227 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 228 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 229 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 230 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 231 INTERRUPT_ARM_MAILBOX)); 232 233 /* Framebuffer */ 234 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 235 if (err) { 236 error_propagate(errp, err); 237 return; 238 } 239 240 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 241 "vcram-base", &err); 242 if (err) { 243 error_propagate(errp, err); 244 return; 245 } 246 247 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 248 if (err) { 249 error_propagate(errp, err); 250 return; 251 } 252 253 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 254 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 255 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 256 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 257 258 /* Property channel */ 259 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 260 if (err) { 261 error_propagate(errp, err); 262 return; 263 } 264 265 memory_region_add_subregion(&s->mbox_mr, 266 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 267 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 268 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 269 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 270 271 /* Random Number Generator */ 272 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 273 if (err) { 274 error_propagate(errp, err); 275 return; 276 } 277 278 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 279 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 280 281 /* Extended Mass Media Controller 282 * 283 * Compatible with: 284 * - SD Host Controller Specification Version 3.0 Draft 1.0 285 * - SDIO Specification Version 3.0 286 * - MMC Specification Version 4.4 287 * 288 * For the exact details please refer to the Arasan documentation: 289 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 290 */ 291 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 292 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 293 &err); 294 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 295 &err); 296 if (err) { 297 error_propagate(errp, err); 298 return; 299 } 300 301 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 302 if (err) { 303 error_propagate(errp, err); 304 return; 305 } 306 307 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 308 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 309 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 310 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 311 INTERRUPT_ARASANSDIO)); 312 313 /* SDHOST */ 314 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 315 if (err) { 316 error_propagate(errp, err); 317 return; 318 } 319 320 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 321 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 322 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 323 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 324 INTERRUPT_SDIO)); 325 326 /* DMA Channels */ 327 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 328 if (err) { 329 error_propagate(errp, err); 330 return; 331 } 332 333 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 334 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 335 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 336 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 337 338 for (n = 0; n <= 12; n++) { 339 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 340 qdev_get_gpio_in_named(DEVICE(&s->ic), 341 BCM2835_IC_GPU_IRQ, 342 INTERRUPT_DMA0 + n)); 343 } 344 345 /* THERMAL */ 346 object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err); 347 if (err) { 348 error_propagate(errp, err); 349 return; 350 } 351 memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, 352 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); 353 354 /* GPIO */ 355 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 356 if (err) { 357 error_propagate(errp, err); 358 return; 359 } 360 361 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 362 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 363 364 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus", 365 &err); 366 if (err) { 367 error_propagate(errp, err); 368 return; 369 } 370 371 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 372 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 373 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 374 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 375 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 376 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 377 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 378 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 379 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 380 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 381 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 382 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 383 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 384 create_unimp(s, &s->dwc2, "dwc-usb2", USB_OTG_OFFSET, 0x1000); 385 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 386 } 387 388 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 389 { 390 DeviceClass *dc = DEVICE_CLASS(oc); 391 392 dc->realize = bcm2835_peripherals_realize; 393 } 394 395 static const TypeInfo bcm2835_peripherals_type_info = { 396 .name = TYPE_BCM2835_PERIPHERALS, 397 .parent = TYPE_SYS_BUS_DEVICE, 398 .instance_size = sizeof(BCM2835PeripheralState), 399 .instance_init = bcm2835_peripherals_init, 400 .class_init = bcm2835_peripherals_class_init, 401 }; 402 403 static void bcm2835_peripherals_register_types(void) 404 { 405 type_register_static(&bcm2835_peripherals_type_info); 406 } 407 408 type_init(bcm2835_peripherals_register_types) 409