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     object_initialize_child(obj, "ic", &s->ic, TYPE_BCM2835_IC);
  57
  58     /* SYS Timer */
  59     object_initialize_child(obj, "systimer", &s->systmr,
  60                             TYPE_BCM2835_SYSTIMER);
  61
  62     /* UART0 */
  63     object_initialize_child(obj, "uart0", &s->uart0, TYPE_PL011);
  64
  65     /* AUX / UART1 */
  66     object_initialize_child(obj, "aux", &s->aux, TYPE_BCM2835_AUX);
  67
  68     /* Mailboxes */
  69     object_initialize_child(obj, "mbox", &s->mboxes, TYPE_BCM2835_MBOX);
  70
  71     object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
  72                                    OBJECT(&s->mbox_mr));
  73
  74     /* Framebuffer */
  75     object_initialize_child(obj, "fb", &s->fb, TYPE_BCM2835_FB);
  76     object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size");
  77
  78     object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
  79                                    OBJECT(&s->gpu_bus_mr));
  80
  81     /* Property channel */
  82     object_initialize_child(obj, "property", &s->property,
  83                             TYPE_BCM2835_PROPERTY);
  84     object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
  85                               "board-rev");
  86
  87     object_property_add_const_link(OBJECT(&s->property), "fb",
  88                                    OBJECT(&s->fb));
  89     object_property_add_const_link(OBJECT(&s->property), "dma-mr",
  90                                    OBJECT(&s->gpu_bus_mr));
  91
  92     /* Random Number Generator */
  93     object_initialize_child(obj, "rng", &s->rng, TYPE_BCM2835_RNG);
  94
  95     /* Extended Mass Media Controller */
  96     object_initialize_child(obj, "sdhci", &s->sdhci, TYPE_SYSBUS_SDHCI);
  97
  98     /* SDHOST */
  99     object_initialize_child(obj, "sdhost", &s->sdhost, TYPE_BCM2835_SDHOST);
 100
 101     /* DMA Channels */
 102     object_initialize_child(obj, "dma", &s->dma, TYPE_BCM2835_DMA);
 103
 104     object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
 105                                    OBJECT(&s->gpu_bus_mr));
 106
 107     /* Thermal */
 108     object_initialize_child(obj, "thermal", &s->thermal, TYPE_BCM2835_THERMAL);
 109
 110     /* GPIO */
 111     object_initialize_child(obj, "gpio", &s->gpio, TYPE_BCM2835_GPIO);
 112
 113     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
 114                                    OBJECT(&s->sdhci.sdbus));
 115     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
 116                                    OBJECT(&s->sdhost.sdbus));
 117
 118     /* Mphi */
 119     object_initialize_child(obj, "mphi", &s->mphi, TYPE_BCM2835_MPHI);
 120
 121     /* DWC2 */
 122     object_initialize_child(obj, "dwc2", &s->dwc2, TYPE_DWC2_USB);
 123
 124     object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
 125                                    OBJECT(&s->gpu_bus_mr));
 126 }
 127
 128 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 129 {
 130     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 131     Object *obj;
 132     MemoryRegion *ram;
 133     Error *err = NULL;
 134     uint64_t ram_size, vcram_size;
 135     int n;
 136
 137     obj = object_property_get_link(OBJECT(dev), "ram", &err);
 138     if (obj == NULL) {
 139         error_setg(errp, "%s: required ram link not found: %s",
 140                    __func__, error_get_pretty(err));
 141         return;
 142     }
 143
 144     ram = MEMORY_REGION(obj);
 145     ram_size = memory_region_size(ram);
 146
 147     /* Map peripherals and RAM into the GPU address space. */
 148     memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 149                              "bcm2835-peripherals", &s->peri_mr, 0,
 150                              memory_region_size(&s->peri_mr));
 151
 152     memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 153                                         &s->peri_mr_alias, 1);
 154
 155     /* RAM is aliased four times (different cache configurations) on the GPU */
 156     for (n = 0; n < 4; n++) {
 157         memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 158                                  "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 159         memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 160                                             &s->ram_alias[n], 0);
 161     }
 162
 163     /* Interrupt Controller */
 164     sysbus_realize(SYS_BUS_DEVICE(&s->ic), &err);
 165     if (err) {
 166         error_propagate(errp, err);
 167         return;
 168     }
 169
 170     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 171                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 172     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 173
 174     /* Sys Timer */
 175     sysbus_realize(SYS_BUS_DEVICE(&s->systmr), &err);
 176     if (err) {
 177         error_propagate(errp, err);
 178         return;
 179     }
 180     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 181                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 182     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 183         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 184                                INTERRUPT_ARM_TIMER));
 185
 186     /* UART0 */
 187     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 188     sysbus_realize(SYS_BUS_DEVICE(&s->uart0), &err);
 189     if (err) {
 190         error_propagate(errp, err);
 191         return;
 192     }
 193
 194     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 195                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 196     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 197         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 198                                INTERRUPT_UART0));
 199
 200     /* AUX / UART1 */
 201     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 202
 203     sysbus_realize(SYS_BUS_DEVICE(&s->aux), &err);
 204     if (err) {
 205         error_propagate(errp, err);
 206         return;
 207     }
 208
 209     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 210                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 211     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 212         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 213                                INTERRUPT_AUX));
 214
 215     /* Mailboxes */
 216     sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), &err);
 217     if (err) {
 218         error_propagate(errp, err);
 219         return;
 220     }
 221
 222     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 223                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 224     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 225         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 226                                INTERRUPT_ARM_MAILBOX));
 227
 228     /* Framebuffer */
 229     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 230     if (err) {
 231         error_propagate(errp, err);
 232         return;
 233     }
 234
 235     object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size,
 236                              "vcram-base", &err);
 237     if (err) {
 238         error_propagate(errp, err);
 239         return;
 240     }
 241
 242     sysbus_realize(SYS_BUS_DEVICE(&s->fb), &err);
 243     if (err) {
 244         error_propagate(errp, err);
 245         return;
 246     }
 247
 248     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 249                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 250     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 251                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 252
 253     /* Property channel */
 254     sysbus_realize(SYS_BUS_DEVICE(&s->property), &err);
 255     if (err) {
 256         error_propagate(errp, err);
 257         return;
 258     }
 259
 260     memory_region_add_subregion(&s->mbox_mr,
 261                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 262                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 263     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 264                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 265
 266     /* Random Number Generator */
 267     sysbus_realize(SYS_BUS_DEVICE(&s->rng), &err);
 268     if (err) {
 269         error_propagate(errp, err);
 270         return;
 271     }
 272
 273     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 274                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 275
 276     /* Extended Mass Media Controller
 277      *
 278      * Compatible with:
 279      * - SD Host Controller Specification Version 3.0 Draft 1.0
 280      * - SDIO Specification Version 3.0
 281      * - MMC Specification Version 4.4
 282      *
 283      * For the exact details please refer to the Arasan documentation:
 284      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 285      */
 286     object_property_set_uint(OBJECT(&s->sdhci), 3, "sd-spec-version",
 287                              &error_abort);
 288     object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
 289                              &error_abort);
 290     object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
 291                              &error_abort);
 292     sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), &err);
 293     if (err) {
 294         error_propagate(errp, err);
 295         return;
 296     }
 297
 298     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 299                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 300     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 301         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 302                                INTERRUPT_ARASANSDIO));
 303
 304     /* SDHOST */
 305     sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), &err);
 306     if (err) {
 307         error_propagate(errp, err);
 308         return;
 309     }
 310
 311     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 312                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 313     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 314         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 315                                INTERRUPT_SDIO));
 316
 317     /* DMA Channels */
 318     sysbus_realize(SYS_BUS_DEVICE(&s->dma), &err);
 319     if (err) {
 320         error_propagate(errp, err);
 321         return;
 322     }
 323
 324     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 325                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 326     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 327                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 328
 329     for (n = 0; n <= 12; n++) {
 330         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 331                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 332                                                   BCM2835_IC_GPU_IRQ,
 333                                                   INTERRUPT_DMA0 + n));
 334     }
 335
 336     /* THERMAL */
 337     sysbus_realize(SYS_BUS_DEVICE(&s->thermal), &err);
 338     if (err) {
 339         error_propagate(errp, err);
 340         return;
 341     }
 342     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 343                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 344
 345     /* GPIO */
 346     sysbus_realize(SYS_BUS_DEVICE(&s->gpio), &err);
 347     if (err) {
 348         error_propagate(errp, err);
 349         return;
 350     }
 351
 352     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 353                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 354
 355     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 356
 357     /* Mphi */
 358     sysbus_realize(SYS_BUS_DEVICE(&s->mphi), &err);
 359     if (err) {
 360         error_propagate(errp, err);
 361         return;
 362     }
 363
 364     memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 365                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 366     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 367         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 368                                INTERRUPT_HOSTPORT));
 369
 370     /* DWC2 */
 371     sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), &err);
 372     if (err) {
 373         error_propagate(errp, err);
 374         return;
 375     }
 376
 377     memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 378                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 379     sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 380         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 381                                INTERRUPT_USB));
 382
 383     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 384     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 385     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 386     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 387     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 388     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 389     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 390     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 391     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 392     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 393     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 394     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 395     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 396     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 397 }
 398
 399 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 400 {
 401     DeviceClass *dc = DEVICE_CLASS(oc);
 402
 403     dc->realize = bcm2835_peripherals_realize;
 404 }
 405
 406 static const TypeInfo bcm2835_peripherals_type_info = {
 407     .name = TYPE_BCM2835_PERIPHERALS,
 408     .parent = TYPE_SYS_BUS_DEVICE,
 409     .instance_size = sizeof(BCM2835PeripheralState),
 410     .instance_init = bcm2835_peripherals_init,
 411     .class_init = bcm2835_peripherals_class_init,
 412 };
 413
 414 static void bcm2835_peripherals_register_types(void)
 415 {
 416     type_register_static(&bcm2835_peripherals_type_info);
 417 }
 418
 419 type_init(bcm2835_peripherals_register_types)