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