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     sysbus_init_child_obj(OBJECT(ps), name, uds,
  31                           sizeof(UnimplementedDeviceState),
  32                           TYPE_UNIMPLEMENTED_DEVICE);
  33     qdev_prop_set_string(DEVICE(uds), "name", name);
  34     qdev_prop_set_uint64(DEVICE(uds), "size", size);
  35     object_property_set_bool(OBJECT(uds), true, "realized", &error_fatal);
  36     memory_region_add_subregion_overlap(&ps->peri_mr, ofs,
  37                     sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000);
  38 }
  39
  40 static void bcm2835_peripherals_init(Object *obj)
  41 {
  42     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj);
  43
  44     /* Memory region for peripheral devices, which we export to our parent */
  45     memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000);
  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
  51     /* Internal memory region for request/response communication with
  52      * mailbox-addressable peripherals (not exported)
  53      */
  54     memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox",
  55                        MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT);
  56
  57     /* Interrupt Controller */
  58     sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC);
  59
  60     /* SYS Timer */
  61     sysbus_init_child_obj(obj, "systimer", &s->systmr, sizeof(s->systmr),
  62                           TYPE_BCM2835_SYSTIMER);
  63
  64     /* UART0 */
  65     sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0),
  66                           TYPE_PL011);
  67
  68     /* AUX / UART1 */
  69     sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux),
  70                           TYPE_BCM2835_AUX);
  71
  72     /* Mailboxes */
  73     sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes),
  74                           TYPE_BCM2835_MBOX);
  75
  76     object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
  77                                    OBJECT(&s->mbox_mr));
  78
  79     /* Framebuffer */
  80     sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB);
  81     object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size");
  82
  83     object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
  84                                    OBJECT(&s->gpu_bus_mr));
  85
  86     /* Property channel */
  87     sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property),
  88                           TYPE_BCM2835_PROPERTY);
  89     object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
  90                               "board-rev");
  91
  92     object_property_add_const_link(OBJECT(&s->property), "fb",
  93                                    OBJECT(&s->fb));
  94     object_property_add_const_link(OBJECT(&s->property), "dma-mr",
  95                                    OBJECT(&s->gpu_bus_mr));
  96
  97     /* Random Number Generator */
  98     sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng),
  99                           TYPE_BCM2835_RNG);
 100
 101     /* Extended Mass Media Controller */
 102     sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci),
 103                           TYPE_SYSBUS_SDHCI);
 104
 105     /* SDHOST */
 106     sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost),
 107                           TYPE_BCM2835_SDHOST);
 108
 109     /* DMA Channels */
 110     sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma),
 111                           TYPE_BCM2835_DMA);
 112
 113     object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
 114                                    OBJECT(&s->gpu_bus_mr));
 115
 116     /* Thermal */
 117     sysbus_init_child_obj(obj, "thermal", &s->thermal, sizeof(s->thermal),
 118                           TYPE_BCM2835_THERMAL);
 119
 120     /* GPIO */
 121     sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio),
 122                           TYPE_BCM2835_GPIO);
 123
 124     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
 125                                    OBJECT(&s->sdhci.sdbus));
 126     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
 127                                    OBJECT(&s->sdhost.sdbus));
 128 }
 129
 130 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 131 {
 132     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
 133     Object *obj;
 134     MemoryRegion *ram;
 135     Error *err = NULL;
 136     uint64_t ram_size, vcram_size;
 137     int n;
 138
 139     obj = object_property_get_link(OBJECT(dev), "ram", &err);
 140     if (obj == NULL) {
 141         error_setg(errp, "%s: required ram link not found: %s",
 142                    __func__, error_get_pretty(err));
 143         return;
 144     }
 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     object_property_set_bool(OBJECT(&s->ic), true, "realized", &err);
 167     if (err) {
 168         error_propagate(errp, err);
 169         return;
 170     }
 171
 172     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 173                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 174     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 175
 176     /* Sys Timer */
 177     object_property_set_bool(OBJECT(&s->systmr), true, "realized", &err);
 178     if (err) {
 179         error_propagate(errp, err);
 180         return;
 181     }
 182     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 183                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 184     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 185         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 186                                INTERRUPT_ARM_TIMER));
 187
 188     /* UART0 */
 189     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 190     object_property_set_bool(OBJECT(&s->uart0), true, "realized", &err);
 191     if (err) {
 192         error_propagate(errp, err);
 193         return;
 194     }
 195
 196     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 197                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 198     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 199         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 200                                INTERRUPT_UART0));
 201
 202     /* AUX / UART1 */
 203     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 204
 205     object_property_set_bool(OBJECT(&s->aux), true, "realized", &err);
 206     if (err) {
 207         error_propagate(errp, err);
 208         return;
 209     }
 210
 211     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 212                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 213     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 214         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 215                                INTERRUPT_AUX));
 216
 217     /* Mailboxes */
 218     object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err);
 219     if (err) {
 220         error_propagate(errp, err);
 221         return;
 222     }
 223
 224     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 225                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 226     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 227         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 228                                INTERRUPT_ARM_MAILBOX));
 229
 230     /* Framebuffer */
 231     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 232     if (err) {
 233         error_propagate(errp, err);
 234         return;
 235     }
 236
 237     object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size,
 238                              "vcram-base", &err);
 239     if (err) {
 240         error_propagate(errp, err);
 241         return;
 242     }
 243
 244     object_property_set_bool(OBJECT(&s->fb), true, "realized", &err);
 245     if (err) {
 246         error_propagate(errp, err);
 247         return;
 248     }
 249
 250     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 251                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 252     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 253                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 254
 255     /* Property channel */
 256     object_property_set_bool(OBJECT(&s->property), true, "realized", &err);
 257     if (err) {
 258         error_propagate(errp, err);
 259         return;
 260     }
 261
 262     memory_region_add_subregion(&s->mbox_mr,
 263                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 264                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 265     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 266                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 267
 268     /* Random Number Generator */
 269     object_property_set_bool(OBJECT(&s->rng), true, "realized", &err);
 270     if (err) {
 271         error_propagate(errp, err);
 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), 3, "sd-spec-version", &err);
 289     object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
 290                              &err);
 291     object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
 292                              &err);
 293     if (err) {
 294         error_propagate(errp, err);
 295         return;
 296     }
 297
 298     object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
 299     if (err) {
 300         error_propagate(errp, err);
 301         return;
 302     }
 303
 304     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 305                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 306     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 307         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 308                                INTERRUPT_ARASANSDIO));
 309
 310     /* SDHOST */
 311     object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &err);
 312     if (err) {
 313         error_propagate(errp, err);
 314         return;
 315     }
 316
 317     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 318                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 319     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 320         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 321                                INTERRUPT_SDIO));
 322
 323     /* DMA Channels */
 324     object_property_set_bool(OBJECT(&s->dma), true, "realized", &err);
 325     if (err) {
 326         error_propagate(errp, err);
 327         return;
 328     }
 329
 330     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 331                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 332     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 333                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 334
 335     for (n = 0; n <= 12; n++) {
 336         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 337                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 338                                                   BCM2835_IC_GPU_IRQ,
 339                                                   INTERRUPT_DMA0 + n));
 340     }
 341
 342     /* THERMAL */
 343     object_property_set_bool(OBJECT(&s->thermal), true, "realized", &err);
 344     if (err) {
 345         error_propagate(errp, err);
 346         return;
 347     }
 348     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 349                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 350
 351     /* GPIO */
 352     object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err);
 353     if (err) {
 354         error_propagate(errp, err);
 355         return;
 356     }
 357
 358     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 359                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 360
 361     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 362
 363     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 364     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 365     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 366     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 367     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 368     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 369     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 370     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 371     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 372     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 373     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 374     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 375     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 376     create_unimp(s, &s->dwc2, "dwc-usb2", USB_OTG_OFFSET, 0x1000);
 377     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 378 }
 379
 380 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 381 {
 382     DeviceClass *dc = DEVICE_CLASS(oc);
 383
 384     dc->realize = bcm2835_peripherals_realize;
 385 }
 386
 387 static const TypeInfo bcm2835_peripherals_type_info = {
 388     .name = TYPE_BCM2835_PERIPHERALS,
 389     .parent = TYPE_SYS_BUS_DEVICE,
 390     .instance_size = sizeof(BCM2835PeripheralState),
 391     .instance_init = bcm2835_peripherals_init,
 392     .class_init = bcm2835_peripherals_class_init,
 393 };
 394
 395 static void bcm2835_peripherals_register_types(void)
 396 {
 397     type_register_static(&bcm2835_peripherals_type_info);
 398 }
 399
 400 type_init(bcm2835_peripherals_register_types)