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 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     /* SYS Timer */
  62     sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr),
  63                           TYPE_BCM2835_SYSTIMER);
  64
  65     /* UART0 */
  66     sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0),
  67                           TYPE_PL011);
  68
  69     /* AUX / UART1 */
  70     sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux),
  71                           TYPE_BCM2835_AUX);
  72
  73     /* Mailboxes */
  74     sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes),
  75                           TYPE_BCM2835_MBOX);
  76
  77     object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
  78                                    OBJECT(&s->mbox_mr), &error_abort);
  79
  80     /* Framebuffer */
  81     sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB);
  82     object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size",
  83                               &error_abort);
  84
  85     object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
  86                                    OBJECT(&s->gpu_bus_mr), &error_abort);
  87
  88     /* Property channel */
  89     sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property),
  90                           TYPE_BCM2835_PROPERTY);
  91     object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
  92                               "board-rev", &error_abort);
  93
  94     object_property_add_const_link(OBJECT(&s->property), "fb",
  95                                    OBJECT(&s->fb), &error_abort);
  96     object_property_add_const_link(OBJECT(&s->property), "dma-mr",
  97                                    OBJECT(&s->gpu_bus_mr), &error_abort);
  98
  99     /* Random Number Generator */
 100     sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng),
 101                           TYPE_BCM2835_RNG);
 102
 103     /* Extended Mass Media Controller */
 104     sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci),
 105                           TYPE_SYSBUS_SDHCI);
 106
 107     /* SDHOST */
 108     sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost),
 109                           TYPE_BCM2835_SDHOST);
 110
 111     /* DMA Channels */
 112     sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma),
 113                           TYPE_BCM2835_DMA);
 114
 115     object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
 116                                    OBJECT(&s->gpu_bus_mr), &error_abort);
 117
 118     /* Thermal */
 119     sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal),
 120                           TYPE_BCM2835_THERMAL);
 121
 122     /* GPIO */
 123     sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio),
 124                           TYPE_BCM2835_GPIO);
 125
 126     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
 127                                    OBJECT(&s->sdhci.sdbus), &error_abort);
 128     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
 129                                    OBJECT(&s->sdhost.sdbus), &error_abort);
 130 }
 131
 132 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 133 {
 134     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 135     Object *obj;
 136     MemoryRegion *ram;
 137     Error *err = NULL;
 138     uint64_t ram_size, vcram_size;
 139     int n;
 140
 141     obj = object_property_get_link(OBJECT(dev), "ram", &err);
 142     if (obj == NULL) {
 143         error_setg(errp, "%s: required ram link not found: %s",
 144                    __func__, error_get_pretty(err));
 145         return;
 146     }
 147
 148     ram = MEMORY_REGION(obj);
 149     ram_size = memory_region_size(ram);
 150
 151     /* Map peripherals and RAM into the GPU address space. */
 152     memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 153                              "bcm2835-peripherals", &s->peri_mr, 0,
 154                              memory_region_size(&s->peri_mr));
 155
 156     memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 157                                         &s->peri_mr_alias, 1);
 158
 159     /* RAM is aliased four times (different cache configurations) on the GPU */
 160     for (n = 0; n < 4; n++) {
 161         memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 162                                  "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 163         memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 164                                             &s->ram_alias[n], 0);
 165     }
 166
 167     /* Interrupt Controller */
 168     object_property_set_bool(OBJECT(&s->ic), true, "realized", &err);
 169     if (err) {
 170         error_propagate(errp, err);
 171         return;
 172     }
 173
 174     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 175                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 176     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 177
 178     /* Sys Timer */
 179     object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err);
 180     if (err) {
 181         error_propagate(errp, err);
 182         return;
 183     }
 184     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 185                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 186     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 187         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 188                                INTERRUPT_ARM_TIMER));
 189
 190     /* UART0 */
 191     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 192     object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err);
 193     if (err) {
 194         error_propagate(errp, err);
 195         return;
 196     }
 197
 198     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 199                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 200     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 201         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 202                                INTERRUPT_UART0));
 203
 204     /* AUX / UART1 */
 205     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 206
 207     object_property_set_bool(OBJECT(&s->aux), true, "realized", &err);
 208     if (err) {
 209         error_propagate(errp, err);
 210         return;
 211     }
 212
 213     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 214                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 215     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 216         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 217                                INTERRUPT_AUX));
 218
 219     /* Mailboxes */
 220     object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err);
 221     if (err) {
 222         error_propagate(errp, err);
 223         return;
 224     }
 225
 226     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 227                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 228     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 229         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 230                                INTERRUPT_ARM_MAILBOX));
 231
 232     /* Framebuffer */
 233     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 234     if (err) {
 235         error_propagate(errp, err);
 236         return;
 237     }
 238
 239     object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size,
 240                              "vcram-base", &err);
 241     if (err) {
 242         error_propagate(errp, err);
 243         return;
 244     }
 245
 246     object_property_set_bool(OBJECT(&s->fb), true, "realized", &err);
 247     if (err) {
 248         error_propagate(errp, err);
 249         return;
 250     }
 251
 252     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 253                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 254     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 255                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 256
 257     /* Property channel */
 258     object_property_set_bool(OBJECT(&s->property), true, "realized", &err);
 259     if (err) {
 260         error_propagate(errp, err);
 261         return;
 262     }
 263
 264     memory_region_add_subregion(&s->mbox_mr,
 265                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 266                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 267     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 268                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 269
 270     /* Random Number Generator */
 271     object_property_set_bool(OBJECT(&s->rng), true, "realized", &err);
 272     if (err) {
 273         error_propagate(errp, err);
 274         return;
 275     }
 276
 277     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 278                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 279
 280     /* Extended Mass Media Controller
 281      *
 282      * Compatible with:
 283      * - SD Host Controller Specification Version 3.0 Draft 1.0
 284      * - SDIO Specification Version 3.0
 285      * - MMC Specification Version 4.4
 286      *
 287      * For the exact details please refer to the Arasan documentation:
 288      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 289      */
 290     object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version", &err);
 291     object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
 292                              &err);
 293     object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
 294                              &err);
 295     if (err) {
 296         error_propagate(errp, err);
 297         return;
 298     }
 299
 300     object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
 301     if (err) {
 302         error_propagate(errp, err);
 303         return;
 304     }
 305
 306     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 307                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 308     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 309         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 310                                INTERRUPT_ARASANSDIO));
 311
 312     /* SDHOST */
 313     object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err);
 314     if (err) {
 315         error_propagate(errp, err);
 316         return;
 317     }
 318
 319     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 320                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 321     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 322         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 323                                INTERRUPT_SDIO));
 324
 325     /* DMA Channels */
 326     object_property_set_bool(OBJECT(&s->dma), true, "realized", &err);
 327     if (err) {
 328         error_propagate(errp, err);
 329         return;
 330     }
 331
 332     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 333                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 334     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 335                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 336
 337     for (n = 0; n <= 12; n++) {
 338         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 339                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 340                                                   BCM2835_IC_GPU_IRQ,
 341                                                   INTERRUPT_DMA0 + n));
 342     }
 343
 344     /* THERMAL */
 345     object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err);
 346     if (err) {
 347         error_propagate(errp, err);
 348         return;
 349     }
 350     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 351                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 352
 353     /* GPIO */
 354     object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err);
 355     if (err) {
 356         error_propagate(errp, err);
 357         return;
 358     }
 359
 360     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 361                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 362
 363     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus",
 364                               &err);
 365     if (err) {
 366         error_propagate(errp, err);
 367         return;
 368     }
 369
 370     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 371     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 372     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 373     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 374     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 375     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 376     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 377     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 378     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 379     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 380     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 381     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 382     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 383     create_unimp(s, &s->dwc2, "dwc-usb2", USB_OTG_OFFSET, 0x1000);
 384     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 385 }
 386
 387 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 388 {
 389     DeviceClass *dc = DEVICE_CLASS(oc);
 390
 391     dc->realize = bcm2835_peripherals_realize;
 392 }
 393
 394 static const TypeInfo bcm2835_peripherals_type_info = {
 395     .name = TYPE_BCM2835_PERIPHERALS,
 396     .parent = TYPE_SYS_BUS_DEVICE,
 397     .instance_size = sizeof(BCM2835PeripheralState),
 398     .instance_init = bcm2835_peripherals_init,
 399     .class_init = bcm2835_peripherals_class_init,
 400 };
 401
 402 static void bcm2835_peripherals_register_types(void)
 403 {
 404     type_register_static(&bcm2835_peripherals_type_info);
 405 }
 406
 407 type_init(bcm2835_peripherals_register_types)