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 code is licensed under the GNU GPLv2 and later. 9 */ 10 11 #include "qemu/osdep.h" 12 #include "qapi/error.h" 13 #include "qemu/module.h" 14 #include "hw/arm/bcm2835_peripherals.h" 15 #include "hw/misc/bcm2835_mbox_defs.h" 16 #include "hw/arm/raspi_platform.h" 17 #include "sysemu/sysemu.h" 18 19 /* Peripheral base address on the VC (GPU) system bus */ 20 #define BCM2835_VC_PERI_BASE 0x7e000000 21 22 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */ 23 #define BCM2835_SDHC_CAPAREG 0x52134b4 24 25 static void create_unimp(BCM2835PeripheralState *ps, 26 UnimplementedDeviceState *uds, 27 const char *name, hwaddr ofs, hwaddr size) 28 { 29 sysbus_init_child_obj(OBJECT(ps), name, uds, 30 sizeof(UnimplementedDeviceState), 31 TYPE_UNIMPLEMENTED_DEVICE); 32 qdev_prop_set_string(DEVICE(uds), "name", name); 33 qdev_prop_set_uint64(DEVICE(uds), "size", size); 34 object_property_set_bool(OBJECT(uds), true, "realized", &error_fatal); 35 memory_region_add_subregion_overlap(&ps->peri_mr, ofs, 36 sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000); 37 } 38 39 static void bcm2835_peripherals_init(Object *obj) 40 { 41 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj); 42 43 /* Memory region for peripheral devices, which we export to our parent */ 44 memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000); 45 object_property_add_child(obj, "peripheral-io", OBJECT(&s->peri_mr), NULL); 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 object_property_add_child(obj, "gpu-bus", OBJECT(&s->gpu_bus_mr), NULL); 51 52 /* Internal memory region for request/response communication with 53 * mailbox-addressable peripherals (not exported) 54 */ 55 memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox", 56 MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT); 57 58 /* Interrupt Controller */ 59 sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); 60 61 /* UART0 */ 62 sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), 63 TYPE_PL011); 64 65 /* AUX / UART1 */ 66 sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), 67 TYPE_BCM2835_AUX); 68 69 /* Mailboxes */ 70 sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), 71 TYPE_BCM2835_MBOX); 72 73 object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", 74 OBJECT(&s->mbox_mr), &error_abort); 75 76 /* Framebuffer */ 77 sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); 78 object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size", 79 &error_abort); 80 81 object_property_add_const_link(OBJECT(&s->fb), "dma-mr", 82 OBJECT(&s->gpu_bus_mr), &error_abort); 83 84 /* Property channel */ 85 sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property), 86 TYPE_BCM2835_PROPERTY); 87 object_property_add_alias(obj, "board-rev", OBJECT(&s->property), 88 "board-rev", &error_abort); 89 90 object_property_add_const_link(OBJECT(&s->property), "fb", 91 OBJECT(&s->fb), &error_abort); 92 object_property_add_const_link(OBJECT(&s->property), "dma-mr", 93 OBJECT(&s->gpu_bus_mr), &error_abort); 94 95 /* Random Number Generator */ 96 sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), 97 TYPE_BCM2835_RNG); 98 99 /* Extended Mass Media Controller */ 100 sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), 101 TYPE_SYSBUS_SDHCI); 102 103 /* SDHOST */ 104 sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), 105 TYPE_BCM2835_SDHOST); 106 107 /* DMA Channels */ 108 sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), 109 TYPE_BCM2835_DMA); 110 111 object_property_add_const_link(OBJECT(&s->dma), "dma-mr", 112 OBJECT(&s->gpu_bus_mr), &error_abort); 113 114 /* GPIO */ 115 sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), 116 TYPE_BCM2835_GPIO); 117 118 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci", 119 OBJECT(&s->sdhci.sdbus), &error_abort); 120 object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost", 121 OBJECT(&s->sdhost.sdbus), &error_abort); 122 } 123 124 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) 125 { 126 BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); 127 Object *obj; 128 MemoryRegion *ram; 129 Error *err = NULL; 130 uint64_t ram_size, vcram_size; 131 int n; 132 133 obj = object_property_get_link(OBJECT(dev), "ram", &err); 134 if (obj == NULL) { 135 error_setg(errp, "%s: required ram link not found: %s", 136 __func__, error_get_pretty(err)); 137 return; 138 } 139 140 ram = MEMORY_REGION(obj); 141 ram_size = memory_region_size(ram); 142 143 /* Map peripherals and RAM into the GPU address space. */ 144 memory_region_init_alias(&s->peri_mr_alias, OBJECT(s), 145 "bcm2835-peripherals", &s->peri_mr, 0, 146 memory_region_size(&s->peri_mr)); 147 148 memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE, 149 &s->peri_mr_alias, 1); 150 151 /* RAM is aliased four times (different cache configurations) on the GPU */ 152 for (n = 0; n < 4; n++) { 153 memory_region_init_alias(&s->ram_alias[n], OBJECT(s), 154 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size); 155 memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30, 156 &s->ram_alias[n], 0); 157 } 158 159 /* Interrupt Controller */ 160 object_property_set_bool(OBJECT(&s->ic), true, "realized", &err); 161 if (err) { 162 error_propagate(errp, err); 163 return; 164 } 165 166 memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET, 167 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0)); 168 sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic)); 169 170 /* UART0 */ 171 qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); 172 object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err); 173 if (err) { 174 error_propagate(errp, err); 175 return; 176 } 177 178 memory_region_add_subregion(&s->peri_mr, UART0_OFFSET, 179 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0)); 180 sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0, 181 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 182 INTERRUPT_UART0)); 183 184 /* AUX / UART1 */ 185 qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); 186 187 object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); 188 if (err) { 189 error_propagate(errp, err); 190 return; 191 } 192 193 memory_region_add_subregion(&s->peri_mr, AUX_OFFSET, 194 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0)); 195 sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0, 196 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 197 INTERRUPT_AUX)); 198 199 /* Mailboxes */ 200 object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err); 201 if (err) { 202 error_propagate(errp, err); 203 return; 204 } 205 206 memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET, 207 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0)); 208 sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0, 209 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ, 210 INTERRUPT_ARM_MAILBOX)); 211 212 /* Framebuffer */ 213 vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err); 214 if (err) { 215 error_propagate(errp, err); 216 return; 217 } 218 219 object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, 220 "vcram-base", &err); 221 if (err) { 222 error_propagate(errp, err); 223 return; 224 } 225 226 object_property_set_bool(OBJECT(&s->fb), true, "realized", &err); 227 if (err) { 228 error_propagate(errp, err); 229 return; 230 } 231 232 memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT, 233 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0)); 234 sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0, 235 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB)); 236 237 /* Property channel */ 238 object_property_set_bool(OBJECT(&s->property), true, "realized", &err); 239 if (err) { 240 error_propagate(errp, err); 241 return; 242 } 243 244 memory_region_add_subregion(&s->mbox_mr, 245 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT, 246 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0)); 247 sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0, 248 qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY)); 249 250 /* Random Number Generator */ 251 object_property_set_bool(OBJECT(&s->rng), true, "realized", &err); 252 if (err) { 253 error_propagate(errp, err); 254 return; 255 } 256 257 memory_region_add_subregion(&s->peri_mr, RNG_OFFSET, 258 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0)); 259 260 /* Extended Mass Media Controller 261 * 262 * Compatible with: 263 * - SD Host Controller Specification Version 3.0 Draft 1.0 264 * - SDIO Specification Version 3.0 265 * - MMC Specification Version 4.4 266 * 267 * For the exact details please refer to the Arasan documentation: 268 * SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf 269 */ 270 object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err); 271 object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", 272 &err); 273 object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", 274 &err); 275 if (err) { 276 error_propagate(errp, err); 277 return; 278 } 279 280 object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); 281 if (err) { 282 error_propagate(errp, err); 283 return; 284 } 285 286 memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET, 287 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0)); 288 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, 289 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 290 INTERRUPT_ARASANSDIO)); 291 292 /* SDHOST */ 293 object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err); 294 if (err) { 295 error_propagate(errp, err); 296 return; 297 } 298 299 memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET, 300 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0)); 301 sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0, 302 qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, 303 INTERRUPT_SDIO)); 304 305 /* DMA Channels */ 306 object_property_set_bool(OBJECT(&s->dma), true, "realized", &err); 307 if (err) { 308 error_propagate(errp, err); 309 return; 310 } 311 312 memory_region_add_subregion(&s->peri_mr, DMA_OFFSET, 313 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0)); 314 memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET, 315 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1)); 316 317 for (n = 0; n <= 12; n++) { 318 sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n, 319 qdev_get_gpio_in_named(DEVICE(&s->ic), 320 BCM2835_IC_GPU_IRQ, 321 INTERRUPT_DMA0 + n)); 322 } 323 324 /* GPIO */ 325 object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); 326 if (err) { 327 error_propagate(errp, err); 328 return; 329 } 330 331 memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET, 332 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0)); 333 334 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus", 335 &err); 336 if (err) { 337 error_propagate(errp, err); 338 return; 339 } 340 341 create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); 342 create_unimp(s, &s->systmr, "bcm2835-systimer", ST_OFFSET, 0x20); 343 create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); 344 create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 345 create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100); 346 create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100); 347 create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20); 348 create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100); 349 create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20); 350 create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20); 351 create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20); 352 create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80); 353 create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000); 354 create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000); 355 create_unimp(s, &s->dwc2, "dwc-usb2", USB_OTG_OFFSET, 0x1000); 356 create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100); 357 } 358 359 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data) 360 { 361 DeviceClass *dc = DEVICE_CLASS(oc); 362 363 dc->realize = bcm2835_peripherals_realize; 364 } 365 366 static const TypeInfo bcm2835_peripherals_type_info = { 367 .name = TYPE_BCM2835_PERIPHERALS, 368 .parent = TYPE_SYS_BUS_DEVICE, 369 .instance_size = sizeof(BCM2835PeripheralState), 370 .instance_init = bcm2835_peripherals_init, 371 .class_init = bcm2835_peripherals_class_init, 372 }; 373 374 static void bcm2835_peripherals_register_types(void) 375 { 376 type_register_static(&bcm2835_peripherals_type_info); 377 } 378 379 type_init(bcm2835_peripherals_register_types) 380