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    object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
 125                                   OBJECT(&s->gpu_bus_mr));
 126}
 127
 128static 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", &error_abort);
 138
 139    ram = MEMORY_REGION(obj);
 140    ram_size = memory_region_size(ram);
 141
 142    /* Map peripherals and RAM into the GPU address space. */
 143    memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
 144                             "bcm2835-peripherals", &s->peri_mr, 0,
 145                             memory_region_size(&s->peri_mr));
 146
 147    memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
 148                                        &s->peri_mr_alias, 1);
 149
 150    /* RAM is aliased four times (different cache configurations) on the GPU */
 151    for (n = 0; n < 4; n++) {
 152        memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
 153                                 "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
 154        memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
 155                                            &s->ram_alias[n], 0);
 156    }
 157
 158    /* Interrupt Controller */
 159    if (!sysbus_realize(SYS_BUS_DEVICE(&s->ic), errp)) {
 160        return;
 161    }
 162
 163    memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 164                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 165    sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 166
 167    /* Sys Timer */
 168    if (!sysbus_realize(SYS_BUS_DEVICE(&s->systmr), errp)) {
 169        return;
 170    }
 171    memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 172                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 173    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 174        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 175                               INTERRUPT_ARM_TIMER));
 176
 177    /* UART0 */
 178    qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 179    if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart0), errp)) {
 180        return;
 181    }
 182
 183    memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 184                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 185    sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 186        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 187                               INTERRUPT_UART0));
 188
 189    /* AUX / UART1 */
 190    qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 191
 192    if (!sysbus_realize(SYS_BUS_DEVICE(&s->aux), errp)) {
 193        return;
 194    }
 195
 196    memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 197                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 198    sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 199        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 200                               INTERRUPT_AUX));
 201
 202    /* Mailboxes */
 203    if (!sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), errp)) {
 204        return;
 205    }
 206
 207    memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 208                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 209    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 210        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 211                               INTERRUPT_ARM_MAILBOX));
 212
 213    /* Framebuffer */
 214    vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 215    if (err) {
 216        error_propagate(errp, err);
 217        return;
 218    }
 219
 220    if (!object_property_set_uint(OBJECT(&s->fb), "vcram-base",
 221                                  ram_size - vcram_size, errp)) {
 222        return;
 223    }
 224
 225    if (!sysbus_realize(SYS_BUS_DEVICE(&s->fb), errp)) {
 226        return;
 227    }
 228
 229    memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 230                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 231    sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 232                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 233
 234    /* Property channel */
 235    if (!sysbus_realize(SYS_BUS_DEVICE(&s->property), errp)) {
 236        return;
 237    }
 238
 239    memory_region_add_subregion(&s->mbox_mr,
 240                MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 241                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 242    sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 243                      qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 244
 245    /* Random Number Generator */
 246    if (!sysbus_realize(SYS_BUS_DEVICE(&s->rng), errp)) {
 247        return;
 248    }
 249
 250    memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 251                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 252
 253    /* Extended Mass Media Controller
 254     *
 255     * Compatible with:
 256     * - SD Host Controller Specification Version 3.0 Draft 1.0
 257     * - SDIO Specification Version 3.0
 258     * - MMC Specification Version 4.4
 259     *
 260     * For the exact details please refer to the Arasan documentation:
 261     *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 262     */
 263    object_property_set_uint(OBJECT(&s->sdhci), "sd-spec-version", 3,
 264                             &error_abort);
 265    object_property_set_uint(OBJECT(&s->sdhci), "capareg",
 266                             BCM2835_SDHC_CAPAREG, &error_abort);
 267    object_property_set_bool(OBJECT(&s->sdhci), "pending-insert-quirk", true,
 268                             &error_abort);
 269    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), errp)) {
 270        return;
 271    }
 272
 273    memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 274                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 275    sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 276        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 277                               INTERRUPT_ARASANSDIO));
 278
 279    /* SDHOST */
 280    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), errp)) {
 281        return;
 282    }
 283
 284    memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 285                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 286    sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 287        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 288                               INTERRUPT_SDIO));
 289
 290    /* DMA Channels */
 291    if (!sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp)) {
 292        return;
 293    }
 294
 295    memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 296                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 297    memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 298                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 299
 300    for (n = 0; n <= 12; n++) {
 301        sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 302                           qdev_get_gpio_in_named(DEVICE(&s->ic),
 303                                                  BCM2835_IC_GPU_IRQ,
 304                                                  INTERRUPT_DMA0 + n));
 305    }
 306
 307    /* THERMAL */
 308    if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), errp)) {
 309        return;
 310    }
 311    memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 312                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 313
 314    /* GPIO */
 315    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
 316        return;
 317    }
 318
 319    memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 320                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 321
 322    object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 323
 324    /* Mphi */
 325    if (!sysbus_realize(SYS_BUS_DEVICE(&s->mphi), errp)) {
 326        return;
 327    }
 328
 329    memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 330                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 331    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 332        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 333                               INTERRUPT_HOSTPORT));
 334
 335    /* DWC2 */
 336    if (!sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), errp)) {
 337        return;
 338    }
 339
 340    memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 341                sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 342    sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 343        qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 344                               INTERRUPT_USB));
 345
 346    create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 347    create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 348    create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 349    create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 350    create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 351    create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 352    create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 353    create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 354    create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 355    create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 356    create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 357    create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 358    create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 359    create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 360}
 361
 362static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 363{
 364    DeviceClass *dc = DEVICE_CLASS(oc);
 365
 366    dc->realize = bcm2835_peripherals_realize;
 367}
 368
 369static const TypeInfo bcm2835_peripherals_type_info = {
 370    .name = TYPE_BCM2835_PERIPHERALS,
 371    .parent = TYPE_SYS_BUS_DEVICE,
 372    .instance_size = sizeof(BCM2835PeripheralState),
 373    .instance_init = bcm2835_peripherals_init,
 374    .class_init = bcm2835_peripherals_class_init,
 375};
 376
 377static void bcm2835_peripherals_register_types(void)
 378{
 379    type_register_static(&bcm2835_peripherals_type_info);
 380}
 381
 382type_init(bcm2835_peripherals_register_types)
 383