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 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
  25static 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
  39static 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
 132static 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
 387static 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
 394static 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
 402static void bcm2835_peripherals_register_types(void)
 403{
 404    type_register_static(&bcm2835_peripherals_type_info);
 405}
 406
 407type_init(bcm2835_peripherals_register_types)
 408