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     object_initialize_child(OBJECT(ps), name, uds, TYPE_UNIMPLEMENTED_DEVICE);
  31     qdev_prop_set_string(DEVICE(uds), "name", name);
  32     qdev_prop_set_uint64(DEVICE(uds), "size", size);
  33     sysbus_realize(SYS_BUS_DEVICE(uds), &error_fatal);
  34     memory_region_add_subregion_overlap(&ps->peri_mr, ofs,
  35                     sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000);
  36 }
  37
  38 static void bcm2835_peripherals_init(Object *obj)
  39 {
  40     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj);
  41
  42     /* Memory region for peripheral devices, which we export to our parent */
  43     memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000);
  44     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr);
  45
  46     /* Internal memory region for peripheral bus addresses (not exported) */
  47     memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32);
  48
  49     /* Internal memory region for request/response communication with
  50      * mailbox-addressable peripherals (not exported)
  51      */
  52     memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox",
  53                        MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT);
  54
  55     /* Interrupt Controller */
  56     sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC);
  57
  58     /* SYS Timer */
  59     sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr),
  60                           TYPE_BCM2835_SYSTIMER);
  61
  62     /* UART0 */
  63     sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0),
  64                           TYPE_PL011);
  65
  66     /* AUX / UART1 */
  67     sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux),
  68                           TYPE_BCM2835_AUX);
  69
  70     /* Mailboxes */
  71     sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes),
  72                           TYPE_BCM2835_MBOX);
  73
  74     object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
  75                                    OBJECT(&s->mbox_mr));
  76
  77     /* Framebuffer */
  78     sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB);
  79     object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size");
  80
  81     object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
  82                                    OBJECT(&s->gpu_bus_mr));
  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");
  89
  90     object_property_add_const_link(OBJECT(&s->property), "fb",
  91                                    OBJECT(&s->fb));
  92     object_property_add_const_link(OBJECT(&s->property), "dma-mr",
  93                                    OBJECT(&s->gpu_bus_mr));
  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));
 113
 114     /* Thermal */
 115     sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal),
 116                           TYPE_BCM2835_THERMAL);
 117
 118     /* GPIO */
 119     sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio),
 120                           TYPE_BCM2835_GPIO);
 121
 122     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
 123                                    OBJECT(&s->sdhci.sdbus));
 124     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
 125                                    OBJECT(&s->sdhost.sdbus));
 126
 127     /* Mphi */
 128     sysbus_init_child_obj(obj, "mphi", &s->mphi, sizeof(s->mphi),
 129                           TYPE_BCM2835_MPHI);
 130
 131     /* DWC2 */
 132     sysbus_init_child_obj(obj, "dwc2", &s->dwc2, sizeof(s->dwc2),
 133                           TYPE_DWC2_USB);
 134
 135     object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
 136                                    OBJECT(&s->gpu_bus_mr));
 137 }
 138
 139 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 140 {
 141     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 142     Object *obj;
 143     MemoryRegion *ram;
 144     Error *err = NULL;
 145     uint64_t ram_size, vcram_size;
 146     int n;
 147
 148     obj = object_property_get_link(OBJECT(dev), "ram", &err);
 149     if (obj == NULL) {
 150         error_setg(errp, "%s: required ram link not found: %s",
 151                    __func__, error_get_pretty(err));
 152         return;
 153     }
 154
 155     ram = MEMORY_REGION(obj);
 156     ram_size = memory_region_size(ram);
 157
 158     /* Map peripherals and RAM into the GPU address space. */
 159     memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 160                              "bcm2835-peripherals", &s->peri_mr, 0,
 161                              memory_region_size(&s->peri_mr));
 162
 163     memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 164                                         &s->peri_mr_alias, 1);
 165
 166     /* RAM is aliased four times (different cache configurations) on the GPU */
 167     for (n = 0; n < 4; n++) {
 168         memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 169                                  "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 170         memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 171                                             &s->ram_alias[n], 0);
 172     }
 173
 174     /* Interrupt Controller */
 175     object_property_set_bool(OBJECT(&s->ic), true, "realized", &err);
 176     if (err) {
 177         error_propagate(errp, err);
 178         return;
 179     }
 180
 181     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 182                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 183     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 184
 185     /* Sys Timer */
 186     object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err);
 187     if (err) {
 188         error_propagate(errp, err);
 189         return;
 190     }
 191     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 192                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 193     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 194         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 195                                INTERRUPT_ARM_TIMER));
 196
 197     /* UART0 */
 198     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 199     object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err);
 200     if (err) {
 201         error_propagate(errp, err);
 202         return;
 203     }
 204
 205     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 206                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 207     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 208         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 209                                INTERRUPT_UART0));
 210
 211     /* AUX / UART1 */
 212     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 213
 214     object_property_set_bool(OBJECT(&s->aux), true, "realized", &err);
 215     if (err) {
 216         error_propagate(errp, err);
 217         return;
 218     }
 219
 220     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 221                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 222     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 223         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 224                                INTERRUPT_AUX));
 225
 226     /* Mailboxes */
 227     object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err);
 228     if (err) {
 229         error_propagate(errp, err);
 230         return;
 231     }
 232
 233     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 234                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 235     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 236         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 237                                INTERRUPT_ARM_MAILBOX));
 238
 239     /* Framebuffer */
 240     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 241     if (err) {
 242         error_propagate(errp, err);
 243         return;
 244     }
 245
 246     object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size,
 247                              "vcram-base", &err);
 248     if (err) {
 249         error_propagate(errp, err);
 250         return;
 251     }
 252
 253     object_property_set_bool(OBJECT(&s->fb), true, "realized", &err);
 254     if (err) {
 255         error_propagate(errp, err);
 256         return;
 257     }
 258
 259     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 260                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 261     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 262                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 263
 264     /* Property channel */
 265     object_property_set_bool(OBJECT(&s->property), true, "realized", &err);
 266     if (err) {
 267         error_propagate(errp, err);
 268         return;
 269     }
 270
 271     memory_region_add_subregion(&s->mbox_mr,
 272                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 273                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 274     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 275                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 276
 277     /* Random Number Generator */
 278     object_property_set_bool(OBJECT(&s->rng), true, "realized", &err);
 279     if (err) {
 280         error_propagate(errp, err);
 281         return;
 282     }
 283
 284     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 285                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 286
 287     /* Extended Mass Media Controller
 288      *
 289      * Compatible with:
 290      * - SD Host Controller Specification Version 3.0 Draft 1.0
 291      * - SDIO Specification Version 3.0
 292      * - MMC Specification Version 4.4
 293      *
 294      * For the exact details please refer to the Arasan documentation:
 295      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 296      */
 297     object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err);
 298     object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
 299                              &err);
 300     object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
 301                              &err);
 302     if (err) {
 303         error_propagate(errp, err);
 304         return;
 305     }
 306
 307     object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
 308     if (err) {
 309         error_propagate(errp, err);
 310         return;
 311     }
 312
 313     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 314                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 315     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 316         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 317                                INTERRUPT_ARASANSDIO));
 318
 319     /* SDHOST */
 320     object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err);
 321     if (err) {
 322         error_propagate(errp, err);
 323         return;
 324     }
 325
 326     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 327                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 328     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 329         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 330                                INTERRUPT_SDIO));
 331
 332     /* DMA Channels */
 333     object_property_set_bool(OBJECT(&s->dma), true, "realized", &err);
 334     if (err) {
 335         error_propagate(errp, err);
 336         return;
 337     }
 338
 339     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 340                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 341     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 342                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 343
 344     for (n = 0; n <= 12; n++) {
 345         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 346                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 347                                                   BCM2835_IC_GPU_IRQ,
 348                                                   INTERRUPT_DMA0 + n));
 349     }
 350
 351     /* THERMAL */
 352     object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err);
 353     if (err) {
 354         error_propagate(errp, err);
 355         return;
 356     }
 357     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 358                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 359
 360     /* GPIO */
 361     object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err);
 362     if (err) {
 363         error_propagate(errp, err);
 364         return;
 365     }
 366
 367     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 368                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 369
 370     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 371
 372     /* Mphi */
 373     object_property_set_bool(OBJECT(&s->mphi), true, "realized", &err);
 374     if (err) {
 375         error_propagate(errp, err);
 376         return;
 377     }
 378
 379     memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 380                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 381     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 382         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 383                                INTERRUPT_HOSTPORT));
 384
 385     /* DWC2 */
 386     object_property_set_bool(OBJECT(&s->dwc2), true, "realized", &err);
 387     if (err) {
 388         error_propagate(errp, err);
 389         return;
 390     }
 391
 392     memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 393                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 394     sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 395         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 396                                INTERRUPT_USB));
 397
 398     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 399     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 400     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 401     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 402     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 403     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 404     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 405     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 406     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 407     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 408     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 409     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 410     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 411     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 412 }
 413
 414 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 415 {
 416     DeviceClass *dc = DEVICE_CLASS(oc);
 417
 418     dc->realize = bcm2835_peripherals_realize;
 419 }
 420
 421 static const TypeInfo bcm2835_peripherals_type_info = {
 422     .name = TYPE_BCM2835_PERIPHERALS,
 423     .parent = TYPE_SYS_BUS_DEVICE,
 424     .instance_size = sizeof(BCM2835PeripheralState),
 425     .instance_init = bcm2835_peripherals_init,
 426     .class_init = bcm2835_peripherals_class_init,
 427 };
 428
 429 static void bcm2835_peripherals_register_types(void)
 430 {
 431     type_register_static(&bcm2835_peripherals_type_info);
 432 }
 433
 434 type_init(bcm2835_peripherals_register_types)