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), 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->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
 347     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
 348     create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
 349     create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
 350     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
 351     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
 352     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
 353     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
 354     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
 355     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
 356     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
 357     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
 358     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
 359     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
 360     create_unimp(s, &s->v3d, "bcm2835-v3d", V3D_OFFSET, 0x1000);
 361     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 362 }
 363
 364 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 365 {
 366     DeviceClass *dc = DEVICE_CLASS(oc);
 367
 368     dc->realize = bcm2835_peripherals_realize;
 369 }
 370
 371 static const TypeInfo bcm2835_peripherals_type_info = {
 372     .name = TYPE_BCM2835_PERIPHERALS,
 373     .parent = TYPE_SYS_BUS_DEVICE,
 374     .instance_size = sizeof(BCM2835PeripheralState),
 375     .instance_init = bcm2835_peripherals_init,
 376     .class_init = bcm2835_peripherals_class_init,
 377 };
 378
 379 static void bcm2835_peripherals_register_types(void)
 380 {
 381     type_register_static(&bcm2835_peripherals_type_info);
 382 }
 383
 384 type_init(bcm2835_peripherals_register_types)