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     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
  38 static 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
 128 static 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), &err)) {
 160         error_propagate(errp, err);
 161         return;
 162     }
 163
 164     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
 165                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
 166     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
 167
 168     /* Sys Timer */
 169     if (!sysbus_realize(SYS_BUS_DEVICE(&s->systmr), &err)) {
 170         error_propagate(errp, err);
 171         return;
 172     }
 173     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
 174                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
 175     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
 176         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 177                                INTERRUPT_ARM_TIMER));
 178
 179     /* UART0 */
 180     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
 181     if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart0), &err)) {
 182         error_propagate(errp, err);
 183         return;
 184     }
 185
 186     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
 187                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
 188     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
 189         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 190                                INTERRUPT_UART0));
 191
 192     /* AUX / UART1 */
 193     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));
 194
 195     if (!sysbus_realize(SYS_BUS_DEVICE(&s->aux), &err)) {
 196         error_propagate(errp, err);
 197         return;
 198     }
 199
 200     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
 201                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
 202     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
 203         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 204                                INTERRUPT_AUX));
 205
 206     /* Mailboxes */
 207     if (!sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), &err)) {
 208         error_propagate(errp, err);
 209         return;
 210     }
 211
 212     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
 213                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
 214     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
 215         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
 216                                INTERRUPT_ARM_MAILBOX));
 217
 218     /* Framebuffer */
 219     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
 220     if (err) {
 221         error_propagate(errp, err);
 222         return;
 223     }
 224
 225     if (!object_property_set_uint(OBJECT(&s->fb), "vcram-base",
 226                                   ram_size - vcram_size, &err)) {
 227         error_propagate(errp, err);
 228         return;
 229     }
 230
 231     if (!sysbus_realize(SYS_BUS_DEVICE(&s->fb), &err)) {
 232         error_propagate(errp, err);
 233         return;
 234     }
 235
 236     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
 237                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
 238     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
 239                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
 240
 241     /* Property channel */
 242     if (!sysbus_realize(SYS_BUS_DEVICE(&s->property), &err)) {
 243         error_propagate(errp, err);
 244         return;
 245     }
 246
 247     memory_region_add_subregion(&s->mbox_mr,
 248                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
 249                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
 250     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
 251                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
 252
 253     /* Random Number Generator */
 254     if (!sysbus_realize(SYS_BUS_DEVICE(&s->rng), &err)) {
 255         error_propagate(errp, err);
 256         return;
 257     }
 258
 259     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
 260                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));
 261
 262     /* Extended Mass Media Controller
 263      *
 264      * Compatible with:
 265      * - SD Host Controller Specification Version 3.0 Draft 1.0
 266      * - SDIO Specification Version 3.0
 267      * - MMC Specification Version 4.4
 268      *
 269      * For the exact details please refer to the Arasan documentation:
 270      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
 271      */
 272     object_property_set_uint(OBJECT(&s->sdhci), "sd-spec-version", 3,
 273                              &error_abort);
 274     object_property_set_uint(OBJECT(&s->sdhci), "capareg",
 275                              BCM2835_SDHC_CAPAREG, &error_abort);
 276     object_property_set_bool(OBJECT(&s->sdhci), "pending-insert-quirk", true,
 277                              &error_abort);
 278     if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), &err)) {
 279         error_propagate(errp, err);
 280         return;
 281     }
 282
 283     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
 284                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
 285     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
 286         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 287                                INTERRUPT_ARASANSDIO));
 288
 289     /* SDHOST */
 290     if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), &err)) {
 291         error_propagate(errp, err);
 292         return;
 293     }
 294
 295     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
 296                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
 297     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
 298         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 299                                INTERRUPT_SDIO));
 300
 301     /* DMA Channels */
 302     if (!sysbus_realize(SYS_BUS_DEVICE(&s->dma), &err)) {
 303         error_propagate(errp, err);
 304         return;
 305     }
 306
 307     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
 308                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
 309     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
 310                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
 311
 312     for (n = 0; n <= 12; n++) {
 313         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
 314                            qdev_get_gpio_in_named(DEVICE(&s->ic),
 315                                                   BCM2835_IC_GPU_IRQ,
 316                                                   INTERRUPT_DMA0 + n));
 317     }
 318
 319     /* THERMAL */
 320     if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), &err)) {
 321         error_propagate(errp, err);
 322         return;
 323     }
 324     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
 325                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));
 326
 327     /* GPIO */
 328     if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), &err)) {
 329         error_propagate(errp, err);
 330         return;
 331     }
 332
 333     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
 334                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));
 335
 336     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");
 337
 338     /* Mphi */
 339     if (!sysbus_realize(SYS_BUS_DEVICE(&s->mphi), &err)) {
 340         error_propagate(errp, err);
 341         return;
 342     }
 343
 344     memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
 345                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
 346     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
 347         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 348                                INTERRUPT_HOSTPORT));
 349
 350     /* DWC2 */
 351     if (!sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), &err)) {
 352         error_propagate(errp, err);
 353         return;
 354     }
 355
 356     memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
 357                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
 358     sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
 359         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
 360                                INTERRUPT_USB));
 361
 362     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 363     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 364     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 365     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 366     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 367     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 368     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 369     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 370     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 371     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 372     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 373     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 374     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 375     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 376 }
 377
 378 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 379 {
 380     DeviceClass *dc = DEVICE_CLASS(oc);
 381
 382     dc->realize = bcm2835_peripherals_realize;
 383 }
 384
 385 static const TypeInfo bcm2835_peripherals_type_info = {
 386     .name = TYPE_BCM2835_PERIPHERALS,
 387     .parent = TYPE_SYS_BUS_DEVICE,
 388     .instance_size = sizeof(BCM2835PeripheralState),
 389     .instance_init = bcm2835_peripherals_init,
 390     .class_init = bcm2835_peripherals_class_init,
 391 };
 392
 393 static void bcm2835_peripherals_register_types(void)
 394 {
 395     type_register_static(&bcm2835_peripherals_type_info);
 396 }
 397
 398 type_init(bcm2835_peripherals_register_types)