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