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