LXR qemu/hw/arm/bcm2835

   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
  26static 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
  38static 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    /* CPRMAN clock manager */
 125    object_initialize_child(obj, "cprman", &s->cprman, TYPE_BCM2835_CPRMAN);
 126
 127    object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
 128                                   OBJECT(&s->gpu_bus_mr));
 129
 130    /* Power Management */
 131    object_initialize_child(obj, "powermgt", &s->powermgt,
 132                            TYPE_BCM2835_POWERMGT);
 133}
 134
 135static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 136{
 137    BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 138    Object *obj;
 139    MemoryRegion *ram;
 140    Error *err = NULL;
 141    uint64_t ram_size, vcram_size;
 142    int n;
 143
 144    obj = object_property_get_link(OBJECT(dev), "ram", &error_abort);
 145
 146    ram = MEMORY_REGION(obj);
 147    ram_size = memory_region_size(ram);
 148
 149    /* Map peripherals and RAM into the GPU address space. */
 150    memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 151                             "bcm2835-peripherals", &s->peri_mr, 0,
 152                             memory_region_size(&s->peri_mr));
 153
 154    memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 155                                        &s->peri_mr_alias, 1);
 156
 157    /* RAM is aliased four times (different cache configurations) on the GPU */
 158    for (n = 0; n < 4; n++) {
 159        memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 160                                 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 161        memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 162                                            &s->ram_alias[n], 0);
 163    }
 164
 165    /* Interrupt Controller */
 166    if (!sysbus_realize(SYS_BUS_DEVICE(&s->ic), errp)) {
 167        return;
 168    }
 169
 170    /* CPRMAN clock manager */
 171    if (!sysbus_realize(SYS_BUS_DEVICE(&s->cprman), errp)) {
 172        return;
 173    }
 174    memory_region_add_subregion(&s->peri_mr, CPRMAN_OFFSET,
 175                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cprman), 0));
 176    qdev_connect_clock_in(DEVICE(&s->uart0), "clk",
 177                          qdev_get_clock_out(DEVICE(&s->cprman), "uart-out"));
 178
 179    memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 180                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 181    sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 182
 183    /* Sys Timer */
 184    if (!sysbus_realize(SYS_BUS_DEVICE(&s->systmr), errp)) {
 185        return;
 186    }
 187    memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 188                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 189    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 190        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 191                               INTERRUPT_TIMER0));
 192    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 1,
 193        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 194                               INTERRUPT_TIMER1));
 195    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 2,
 196        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 197                               INTERRUPT_TIMER2));
 198    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 3,
 199        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 200                               INTERRUPT_TIMER3));
 201
 202    /* UART0 */
 203    qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 204    if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart0), errp)) {
 205        return;
 206    }
 207
 208    memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 209                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 210    sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 211        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 212                               INTERRUPT_UART0));
 213
 214    /* AUX / UART1 */
 215    qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 216
 217    if (!sysbus_realize(SYS_BUS_DEVICE(&s->aux), errp)) {
 218        return;
 219    }
 220
 221    memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 222                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 223    sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 224        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 225                               INTERRUPT_AUX));
 226
 227    /* Mailboxes */
 228    if (!sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), errp)) {
 229        return;
 230    }
 231
 232    memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 233                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 234    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 235        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 236                               INTERRUPT_ARM_MAILBOX));
 237
 238    /* Framebuffer */
 239    vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 240    if (err) {
 241        error_propagate(errp, err);
 242        return;
 243    }
 244
 245    if (!object_property_set_uint(OBJECT(&s->fb), "vcram-base",
 246                                  ram_size - vcram_size, errp)) {
 247        return;
 248    }
 249
 250    if (!sysbus_realize(SYS_BUS_DEVICE(&s->fb), errp)) {
 251        return;
 252    }
 253
 254    memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 255                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 256    sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 257                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 258
 259    /* Property channel */
 260    if (!sysbus_realize(SYS_BUS_DEVICE(&s->property), errp)) {
 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    if (!sysbus_realize(SYS_BUS_DEVICE(&s->rng), errp)) {
 272        return;
 273    }
 274
 275    memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 276                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 277
 278    /* Extended Mass Media Controller
 279     *
 280     * Compatible with:
 281     * - SD Host Controller Specification Version 3.0 Draft 1.0
 282     * - SDIO Specification Version 3.0
 283     * - MMC Specification Version 4.4
 284     *
 285     * For the exact details please refer to the Arasan documentation:
 286     *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 287     */
 288    object_property_set_uint(OBJECT(&s->sdhci), "sd-spec-version", 3,
 289                             &error_abort);
 290    object_property_set_uint(OBJECT(&s->sdhci), "capareg",
 291                             BCM2835_SDHC_CAPAREG, &error_abort);
 292    object_property_set_bool(OBJECT(&s->sdhci), "pending-insert-quirk", true,
 293                             &error_abort);
 294    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), errp)) {
 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    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), errp)) {
 306        return;
 307    }
 308
 309    memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 310                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 311    sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 312        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 313                               INTERRUPT_SDIO));
 314
 315    /* DMA Channels */
 316    if (!sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp)) {
 317        return;
 318    }
 319
 320    memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 321                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 322    memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 323                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 324
 325    for (n = 0; n <= 12; n++) {
 326        sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 327                           qdev_get_gpio_in_named(DEVICE(&s->ic),
 328                                                  BCM2835_IC_GPU_IRQ,
 329                                                  INTERRUPT_DMA0 + n));
 330    }
 331
 332    /* THERMAL */
 333    if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), errp)) {
 334        return;
 335    }
 336    memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 337                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 338
 339    /* GPIO */
 340    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
 341        return;
 342    }
 343
 344    memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 345                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 346
 347    object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 348
 349    /* Mphi */
 350    if (!sysbus_realize(SYS_BUS_DEVICE(&s->mphi), errp)) {
 351        return;
 352    }
 353
 354    memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 355                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 356    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 357        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 358                               INTERRUPT_HOSTPORT));
 359
 360    /* DWC2 */
 361    if (!sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), errp)) {
 362        return;
 363    }
 364
 365    memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 366                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 367    sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 368        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 369                               INTERRUPT_USB));
 370
 371    /* Power Management */
 372    if (!sysbus_realize(SYS_BUS_DEVICE(&s->powermgt), errp)) {
 373        return;
 374    }
 375
 376    memory_region_add_subregion(&s->peri_mr, PM_OFFSET,
 377                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->powermgt), 0));
 378
 379    create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
 380    create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 381    create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 382    create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 383    create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 384    create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 385    create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 386    create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 387    create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 388    create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 389    create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 390    create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 391    create_unimp(s, &s->v3d, "bcm2835-v3d", V3D_OFFSET, 0x1000);
 392    create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 393}
 394
 395static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 396{
 397    DeviceClass *dc = DEVICE_CLASS(oc);
 398
 399    dc->realize = bcm2835_peripherals_realize;
 400}
 401
 402static const TypeInfo bcm2835_peripherals_type_info = {
 403    .name = TYPE_BCM2835_PERIPHERALS,
 404    .parent = TYPE_SYS_BUS_DEVICE,
 405    .instance_size = sizeof(BCM2835PeripheralState),
 406    .instance_init = bcm2835_peripherals_init,
 407    .class_init = bcm2835_peripherals_class_init,
 408};
 409
 410static void bcm2835_peripherals_register_types(void)
 411{
 412    type_register_static(&bcm2835_peripherals_type_info);
 413}
 414
 415type_init(bcm2835_peripherals_register_types)
 416