hw/arm/bcm2835_peripherals.c

   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     /* DWC2 */
 134     sysbus_init_child_obj(obj, "dwc2", &s->dwc2, sizeof(s->dwc2),
 135                           TYPE_DWC2_USB);
 136
 137     object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
 138                                    OBJECT(&s->gpu_bus_mr));
 139 }
 140
 141 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 142 {
 143     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 144     Object *obj;
 145     MemoryRegion *ram;
 146     Error *err = NULL;
 147     uint64_t ram_size, vcram_size;
 148     int n;
 149
 150     obj = object_property_get_link(OBJECT(dev), "ram", &err);
 151     if (obj == NULL) {
 152         error_setg(errp, "%s: required ram link not found: %s",
 153                    __func__, error_get_pretty(err));
 154         return;
 155     }
 156
 157     ram = MEMORY_REGION(obj);
 158     ram_size = memory_region_size(ram);
 159
 160     /* Map peripherals and RAM into the GPU address space. */
 161     memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 162                              "bcm2835-peripherals", &s->peri_mr, 0,
 163                              memory_region_size(&s->peri_mr));
 164
 165     memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 166                                         &s->peri_mr_alias, 1);
 167
 168     /* RAM is aliased four times (different cache configurations) on the GPU */
 169     for (n = 0; n < 4; n++) {
 170         memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 171                                  "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 172         memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 173                                             &s->ram_alias[n], 0);
 174     }
 175
 176     /* Interrupt Controller */
 177     object_property_set_bool(OBJECT(&s->ic), true, "realized", &err);
 178     if (err) {
 179         error_propagate(errp, err);
 180         return;
 181     }
 182
 183     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 184                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 185     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 186
 187     /* Sys Timer */
 188     object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err);
 189     if (err) {
 190         error_propagate(errp, err);
 191         return;
 192     }
 193     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 194                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 195     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 196         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 197                                INTERRUPT_ARM_TIMER));
 198
 199     /* UART0 */
 200     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 201     object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err);
 202     if (err) {
 203         error_propagate(errp, err);
 204         return;
 205     }
 206
 207     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 208                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 209     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 210         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 211                                INTERRUPT_UART0));
 212
 213     /* AUX / UART1 */
 214     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 215
 216     object_property_set_bool(OBJECT(&s->aux), true, "realized", &err);
 217     if (err) {
 218         error_propagate(errp, err);
 219         return;
 220     }
 221
 222     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 223                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 224     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 225         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 226                                INTERRUPT_AUX));
 227
 228     /* Mailboxes */
 229     object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err);
 230     if (err) {
 231         error_propagate(errp, err);
 232         return;
 233     }
 234
 235     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 236                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 237     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 238         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 239                                INTERRUPT_ARM_MAILBOX));
 240
 241     /* Framebuffer */
 242     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 243     if (err) {
 244         error_propagate(errp, err);
 245         return;
 246     }
 247
 248     object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size,
 249                              "vcram-base", &err);
 250     if (err) {
 251         error_propagate(errp, err);
 252         return;
 253     }
 254
 255     object_property_set_bool(OBJECT(&s->fb), true, "realized", &err);
 256     if (err) {
 257         error_propagate(errp, err);
 258         return;
 259     }
 260
 261     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 262                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 263     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 264                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 265
 266     /* Property channel */
 267     object_property_set_bool(OBJECT(&s->property), true, "realized", &err);
 268     if (err) {
 269         error_propagate(errp, err);
 270         return;
 271     }
 272
 273     memory_region_add_subregion(&s->mbox_mr,
 274                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 275                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 276     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 277                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 278
 279     /* Random Number Generator */
 280     object_property_set_bool(OBJECT(&s->rng), true, "realized", &err);
 281     if (err) {
 282         error_propagate(errp, err);
 283         return;
 284     }
 285
 286     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 287                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 288
 289     /* Extended Mass Media Controller
 290      *
 291      * Compatible with:
 292      * - SD Host Controller Specification Version 3.0 Draft 1.0
 293      * - SDIO Specification Version 3.0
 294      * - MMC Specification Version 4.4
 295      *
 296      * For the exact details please refer to the Arasan documentation:
 297      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 298      */
 299     object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err);
 300     object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
 301                              &err);
 302     object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
 303                              &err);
 304     if (err) {
 305         error_propagate(errp, err);
 306         return;
 307     }
 308
 309     object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
 310     if (err) {
 311         error_propagate(errp, err);
 312         return;
 313     }
 314
 315     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 316                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 317     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 318         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 319                                INTERRUPT_ARASANSDIO));
 320
 321     /* SDHOST */
 322     object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err);
 323     if (err) {
 324         error_propagate(errp, err);
 325         return;
 326     }
 327
 328     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 329                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 330     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 331         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 332                                INTERRUPT_SDIO));
 333
 334     /* DMA Channels */
 335     object_property_set_bool(OBJECT(&s->dma), true, "realized", &err);
 336     if (err) {
 337         error_propagate(errp, err);
 338         return;
 339     }
 340
 341     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 342                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 343     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 344                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 345
 346     for (n = 0; n <= 12; n++) {
 347         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 348                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 349                                                   BCM2835_IC_GPU_IRQ,
 350                                                   INTERRUPT_DMA0 + n));
 351     }
 352
 353     /* THERMAL */
 354     object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err);
 355     if (err) {
 356         error_propagate(errp, err);
 357         return;
 358     }
 359     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 360                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 361
 362     /* GPIO */
 363     object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err);
 364     if (err) {
 365         error_propagate(errp, err);
 366         return;
 367     }
 368
 369     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 370                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 371
 372     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 373
 374     /* Mphi */
 375     object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err);
 376     if (err) {
 377         error_propagate(errp, err);
 378         return;
 379     }
 380
 381     memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 382                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 383     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 384         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 385                                INTERRUPT_HOSTPORT));
 386
 387     /* DWC2 */
 388     object_property_set_bool(OBJECT(&s->dwc2), true, "realized", &err);
 389     if (err) {
 390         error_propagate(errp, err);
 391         return;
 392     }
 393
 394     memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 395                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 396     sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 397         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 398                                INTERRUPT_USB));
 399
 400     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 401     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 402     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 403     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 404     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 405     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 406     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 407     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 408     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 409     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 410     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 411     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 412     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 413     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 414 }
 415
 416 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 417 {
 418     DeviceClass *dc = DEVICE_CLASS(oc);
 419
 420     dc->realize = bcm2835_peripherals_realize;
 421 }
 422
 423 static const TypeInfo bcm2835_peripherals_type_info = {
 424     .name = TYPE_BCM2835_PERIPHERALS,
 425     .parent = TYPE_SYS_BUS_DEVICE,
 426     .instance_size = sizeof(BCM2835PeripheralState),
 427     .instance_init = bcm2835_peripherals_init,
 428     .class_init = bcm2835_peripherals_class_init,
 429 };
 430
 431 static void bcm2835_peripherals_register_types(void)
 432 {
 433     type_register_static(&bcm2835_peripherals_type_info);
 434 }
 435
 436 type_init(bcm2835_peripherals_register_types)