hw/arm/bcm2835_peripherals.c - qemu - Git at Google

 /*
  * Raspberry Pi emulation (c) 2012 Gregory Estrade
  * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
  *
  * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
  * Written by Andrew Baumann
  *
  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  * See the COPYING file in the top-level directory.
  */

 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qemu/module.h"
 #include "hw/arm/bcm2835_peripherals.h"
 #include "hw/misc/bcm2835_mbox_defs.h"
 #include "hw/arm/raspi_platform.h"
 #include "sysemu/sysemu.h"

 /* Peripheral base address on the VC (GPU) system bus */
 #define BCM2835_VC_PERI_BASE 0x7e000000

 /* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
 #define BCM2835_SDHC_CAPAREG 0x52134b4

 static void create_unimp(BCM2835PeripheralState *ps,
                          UnimplementedDeviceState *uds,
                          const char *name, hwaddr ofs, hwaddr size)
 {
     object_initialize_child(OBJECT(ps), name, uds, TYPE_UNIMPLEMENTED_DEVICE);
     qdev_prop_set_string(DEVICE(uds), "name", name);
     qdev_prop_set_uint64(DEVICE(uds), "size", size);
     sysbus_realize(SYS_BUS_DEVICE(uds), &error_fatal);
     memory_region_add_subregion_overlap(&ps->peri_mr, ofs,
                     sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000);
 }

 static void bcm2835_peripherals_init(Object *obj)
 {
     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj);

     /* Memory region for peripheral devices, which we export to our parent */
     memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000);
     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr);

     /* Internal memory region for peripheral bus addresses (not exported) */
     memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32);

     /* Internal memory region for request/response communication with
      * mailbox-addressable peripherals (not exported)
      */
     memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox",
                        MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT);

     /* Interrupt Controller */
     object_initialize_child(obj, "ic", &s->ic, TYPE_BCM2835_IC);

     /* SYS Timer */
     object_initialize_child(obj, "systimer", &s->systmr,
                             TYPE_BCM2835_SYSTIMER);

     /* UART0 */
     object_initialize_child(obj, "uart0", &s->uart0, TYPE_PL011);

     /* AUX / UART1 */
     object_initialize_child(obj, "aux", &s->aux, TYPE_BCM2835_AUX);

     /* Mailboxes */
     object_initialize_child(obj, "mbox", &s->mboxes, TYPE_BCM2835_MBOX);

     object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
                                    OBJECT(&s->mbox_mr));

     /* Framebuffer */
     object_initialize_child(obj, "fb", &s->fb, TYPE_BCM2835_FB);
     object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size");

     object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
                                    OBJECT(&s->gpu_bus_mr));

     /* Property channel */
     object_initialize_child(obj, "property", &s->property,
                             TYPE_BCM2835_PROPERTY);
     object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
                               "board-rev");

     object_property_add_const_link(OBJECT(&s->property), "fb",
                                    OBJECT(&s->fb));
     object_property_add_const_link(OBJECT(&s->property), "dma-mr",
                                    OBJECT(&s->gpu_bus_mr));

     /* Random Number Generator */
     object_initialize_child(obj, "rng", &s->rng, TYPE_BCM2835_RNG);

     /* Extended Mass Media Controller */
     object_initialize_child(obj, "sdhci", &s->sdhci, TYPE_SYSBUS_SDHCI);

     /* SDHOST */
     object_initialize_child(obj, "sdhost", &s->sdhost, TYPE_BCM2835_SDHOST);

     /* DMA Channels */
     object_initialize_child(obj, "dma", &s->dma, TYPE_BCM2835_DMA);

     object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
                                    OBJECT(&s->gpu_bus_mr));

     /* Thermal */
     object_initialize_child(obj, "thermal", &s->thermal, TYPE_BCM2835_THERMAL);

     /* GPIO */
     object_initialize_child(obj, "gpio", &s->gpio, TYPE_BCM2835_GPIO);

     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
                                    OBJECT(&s->sdhci.sdbus));
     object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
                                    OBJECT(&s->sdhost.sdbus));

     /* Mphi */
     object_initialize_child(obj, "mphi", &s->mphi, TYPE_BCM2835_MPHI);

     /* DWC2 */
     object_initialize_child(obj, "dwc2", &s->dwc2, TYPE_DWC2_USB);

     /* CPRMAN clock manager */
     object_initialize_child(obj, "cprman", &s->cprman, TYPE_BCM2835_CPRMAN);

     object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
                                    OBJECT(&s->gpu_bus_mr));
 }

 static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
 {
     BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
     Object *obj;
     MemoryRegion *ram;
     Error *err = NULL;
     uint64_t ram_size, vcram_size;
     int n;

     obj = object_property_get_link(OBJECT(dev), "ram", &error_abort);

     ram = MEMORY_REGION(obj);
     ram_size = memory_region_size(ram);

     /* Map peripherals and RAM into the GPU address space. */
     memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
                              "bcm2835-peripherals", &s->peri_mr, 0,
                              memory_region_size(&s->peri_mr));

     memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
                                         &s->peri_mr_alias, 1);

     /* RAM is aliased four times (different cache configurations) on the GPU */
     for (n = 0; n < 4; n++) {
         memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
                                  "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
         memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
                                             &s->ram_alias[n], 0);
     }

     /* Interrupt Controller */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->ic), errp)) {
         return;
     }

     /* CPRMAN clock manager */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->cprman), errp)) {
         return;
     }
     memory_region_add_subregion(&s->peri_mr, CPRMAN_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cprman), 0));
     qdev_connect_clock_in(DEVICE(&s->uart0), "clk",
                           qdev_get_clock_out(DEVICE(&s->cprman), "uart-out"));

     memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
     sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));

     /* Sys Timer */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->systmr), errp)) {
         return;
     }
     memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_TIMER0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 1,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_TIMER1));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 2,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_TIMER2));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 3,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_TIMER3));

     /* UART0 */
     qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart0), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_UART0));

     /* AUX / UART1 */
     qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));

     if (!sysbus_realize(SYS_BUS_DEVICE(&s->aux), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_AUX));

     /* Mailboxes */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
                                INTERRUPT_ARM_MAILBOX));

     /* Framebuffer */
     vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
     if (err) {
         error_propagate(errp, err);
         return;
     }

     if (!object_property_set_uint(OBJECT(&s->fb), "vcram-base",
                                   ram_size - vcram_size, errp)) {
         return;
     }

     if (!sysbus_realize(SYS_BUS_DEVICE(&s->fb), errp)) {
         return;
     }

     memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
                        qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));

     /* Property channel */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->property), errp)) {
         return;
     }

     memory_region_add_subregion(&s->mbox_mr,
                 MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
                       qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));

     /* Random Number Generator */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->rng), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));

     /* Extended Mass Media Controller
      *
      * Compatible with:
      * - SD Host Controller Specification Version 3.0 Draft 1.0
      * - SDIO Specification Version 3.0
      * - MMC Specification Version 4.4
      *
      * For the exact details please refer to the Arasan documentation:
      *   SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
      */
     object_property_set_uint(OBJECT(&s->sdhci), "sd-spec-version", 3,
                              &error_abort);
     object_property_set_uint(OBJECT(&s->sdhci), "capareg",
                              BCM2835_SDHC_CAPAREG, &error_abort);
     object_property_set_bool(OBJECT(&s->sdhci), "pending-insert-quirk", true,
                              &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_ARASANSDIO));

     /* SDHOST */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_SDIO));

     /* DMA Channels */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
     memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));

     for (n = 0; n <= 12; n++) {
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
                            qdev_get_gpio_in_named(DEVICE(&s->ic),
                                                   BCM2835_IC_GPU_IRQ,
                                                   INTERRUPT_DMA0 + n));
     }

     /* THERMAL */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), errp)) {
         return;
     }
     memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));

     /* GPIO */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));

     object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");

     /* Mphi */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->mphi), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_HOSTPORT));

     /* DWC2 */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), errp)) {
         return;
     }

     memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
                 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
         qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
                                INTERRUPT_USB));

     create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
     create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
     create_unimp(s, &s->powermgt, "bcm2835-powermgt", PM_OFFSET, 0x114);
     create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
     create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
     create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
     create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
     create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
     create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
     create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
     create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
     create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
     create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
     create_unimp(s, &s->v3d, "bcm2835-v3d", V3D_OFFSET, 0x1000);
     create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
 }

 static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = bcm2835_peripherals_realize;
 }

 static const TypeInfo bcm2835_peripherals_type_info = {
     .name = TYPE_BCM2835_PERIPHERALS,
     .parent = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(BCM2835PeripheralState),
     .instance_init = bcm2835_peripherals_init,
     .class_init = bcm2835_peripherals_class_init,
 };

 static void bcm2835_peripherals_register_types(void)
 {
     type_register_static(&bcm2835_peripherals_type_info);
 }

 type_init(bcm2835_peripherals_register_types)
	/*
	* Raspberry Pi emulation (c) 2012 Gregory Estrade
	* Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
	*
	* Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
	* Written by Andrew Baumann
	*
	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	* See the COPYING file in the top-level directory.
	*/

	#include "qemu/osdep.h"
	#include "qapi/error.h"
	#include "qemu/module.h"
	#include "hw/arm/bcm2835_peripherals.h"
	#include "hw/misc/bcm2835_mbox_defs.h"
	#include "hw/arm/raspi_platform.h"
	#include "sysemu/sysemu.h"

	/* Peripheral base address on the VC (GPU) system bus */
	#define BCM2835_VC_PERI_BASE 0x7e000000

	/* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
	#define BCM2835_SDHC_CAPAREG 0x52134b4

	static void create_unimp(BCM2835PeripheralState *ps,
	UnimplementedDeviceState *uds,
	const char *name, hwaddr ofs, hwaddr size)
	{
	object_initialize_child(OBJECT(ps), name, uds, TYPE_UNIMPLEMENTED_DEVICE);
	qdev_prop_set_string(DEVICE(uds), "name", name);
	qdev_prop_set_uint64(DEVICE(uds), "size", size);
	sysbus_realize(SYS_BUS_DEVICE(uds), &error_fatal);
	memory_region_add_subregion_overlap(&ps->peri_mr, ofs,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(uds), 0), -1000);
	}

	static void bcm2835_peripherals_init(Object *obj)
	{
	BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj);

	/* Memory region for peripheral devices, which we export to our parent */
	memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000);
	sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr);

	/* Internal memory region for peripheral bus addresses (not exported) */
	memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32);

	/* Internal memory region for request/response communication with
	* mailbox-addressable peripherals (not exported)
	*/
	memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox",
	MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT);

	/* Interrupt Controller */
	object_initialize_child(obj, "ic", &s->ic, TYPE_BCM2835_IC);

	/* SYS Timer */
	object_initialize_child(obj, "systimer", &s->systmr,
	TYPE_BCM2835_SYSTIMER);

	/* UART0 */
	object_initialize_child(obj, "uart0", &s->uart0, TYPE_PL011);

	/* AUX / UART1 */
	object_initialize_child(obj, "aux", &s->aux, TYPE_BCM2835_AUX);

	/* Mailboxes */
	object_initialize_child(obj, "mbox", &s->mboxes, TYPE_BCM2835_MBOX);

	object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
	OBJECT(&s->mbox_mr));

	/* Framebuffer */
	object_initialize_child(obj, "fb", &s->fb, TYPE_BCM2835_FB);
	object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size");

	object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
	OBJECT(&s->gpu_bus_mr));

	/* Property channel */
	object_initialize_child(obj, "property", &s->property,
	TYPE_BCM2835_PROPERTY);
	object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
	"board-rev");

	object_property_add_const_link(OBJECT(&s->property), "fb",
	OBJECT(&s->fb));
	object_property_add_const_link(OBJECT(&s->property), "dma-mr",
	OBJECT(&s->gpu_bus_mr));

	/* Random Number Generator */
	object_initialize_child(obj, "rng", &s->rng, TYPE_BCM2835_RNG);

	/* Extended Mass Media Controller */
	object_initialize_child(obj, "sdhci", &s->sdhci, TYPE_SYSBUS_SDHCI);

	/* SDHOST */
	object_initialize_child(obj, "sdhost", &s->sdhost, TYPE_BCM2835_SDHOST);

	/* DMA Channels */
	object_initialize_child(obj, "dma", &s->dma, TYPE_BCM2835_DMA);

	object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
	OBJECT(&s->gpu_bus_mr));

	/* Thermal */
	object_initialize_child(obj, "thermal", &s->thermal, TYPE_BCM2835_THERMAL);

	/* GPIO */
	object_initialize_child(obj, "gpio", &s->gpio, TYPE_BCM2835_GPIO);

	object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci",
	OBJECT(&s->sdhci.sdbus));
	object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost",
	OBJECT(&s->sdhost.sdbus));

	/* Mphi */
	object_initialize_child(obj, "mphi", &s->mphi, TYPE_BCM2835_MPHI);

	/* DWC2 */
	object_initialize_child(obj, "dwc2", &s->dwc2, TYPE_DWC2_USB);

	/* CPRMAN clock manager */
	object_initialize_child(obj, "cprman", &s->cprman, TYPE_BCM2835_CPRMAN);

	object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
	OBJECT(&s->gpu_bus_mr));
	}

	static void bcm2835_peripherals_realize(DeviceState dev, Error *errp)
	{
	BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
	Object *obj;
	MemoryRegion *ram;
	Error *err = NULL;
	uint64_t ram_size, vcram_size;
	int n;

	obj = object_property_get_link(OBJECT(dev), "ram", &error_abort);

	ram = MEMORY_REGION(obj);
	ram_size = memory_region_size(ram);

	/* Map peripherals and RAM into the GPU address space. */
	memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
	"bcm2835-peripherals", &s->peri_mr, 0,
	memory_region_size(&s->peri_mr));

	memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
	&s->peri_mr_alias, 1);

	/* RAM is aliased four times (different cache configurations) on the GPU */
	for (n = 0; n < 4; n++) {
	memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
	"bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
	memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
	&s->ram_alias[n], 0);
	}

	/* Interrupt Controller */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->ic), errp)) {
	return;
	}

	/* CPRMAN clock manager */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->cprman), errp)) {
	return;
	}
	memory_region_add_subregion(&s->peri_mr, CPRMAN_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cprman), 0));
	qdev_connect_clock_in(DEVICE(&s->uart0), "clk",
	qdev_get_clock_out(DEVICE(&s->cprman), "uart-out"));

	memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
	sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));

	/* Sys Timer */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->systmr), errp)) {
	return;
	}
	memory_region_add_subregion(&s->peri_mr, ST_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systmr), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_TIMER0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 1,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_TIMER1));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 2,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_TIMER2));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->systmr), 3,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_TIMER3));

	/* UART0 */
	qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0));
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart0), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart0), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart0), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_UART0));

	/* AUX / UART1 */
	qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1));

	if (!sysbus_realize(SYS_BUS_DEVICE(&s->aux), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, AUX_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_AUX));

	/* Mailboxes */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
	INTERRUPT_ARM_MAILBOX));

	/* Framebuffer */
	vcram_size = object_property_get_uint(OBJECT(s), "vcram-size", &err);
	if (err) {
	error_propagate(errp, err);
	return;
	}

	if (!object_property_set_uint(OBJECT(&s->fb), "vcram-base",
	ram_size - vcram_size, errp)) {
	return;
	}

	if (!sysbus_realize(SYS_BUS_DEVICE(&s->fb), errp)) {
	return;
	}

	memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
	qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));

	/* Property channel */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->property), errp)) {
	return;
	}

	memory_region_add_subregion(&s->mbox_mr,
	MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
	qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));

	/* Random Number Generator */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->rng), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, RNG_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0));

	/* Extended Mass Media Controller
	*
	* Compatible with:
	* - SD Host Controller Specification Version 3.0 Draft 1.0
	* - SDIO Specification Version 3.0
	* - MMC Specification Version 4.4
	*
	* For the exact details please refer to the Arasan documentation:
	* SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf
	*/
	object_property_set_uint(OBJECT(&s->sdhci), "sd-spec-version", 3,
	&error_abort);
	object_property_set_uint(OBJECT(&s->sdhci), "capareg",
	BCM2835_SDHC_CAPAREG, &error_abort);
	object_property_set_bool(OBJECT(&s->sdhci), "pending-insert-quirk", true,
	&error_abort);
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, EMMC1_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_ARASANSDIO));

	/* SDHOST */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, MMCI0_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhost), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhost), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_SDIO));

	/* DMA Channels */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
	memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));

	for (n = 0; n <= 12; n++) {
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
	qdev_get_gpio_in_named(DEVICE(&s->ic),
	BCM2835_IC_GPU_IRQ,
	INTERRUPT_DMA0 + n));
	}

	/* THERMAL */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->thermal), errp)) {
	return;
	}
	memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0));

	/* GPIO */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, GPIO_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gpio), 0));

	object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->gpio), "sd-bus");

	/* Mphi */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->mphi), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, MPHI_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mphi), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->mphi), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_HOSTPORT));

	/* DWC2 */
	if (!sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), errp)) {
	return;
	}

	memory_region_add_subregion(&s->peri_mr, USB_OTG_OFFSET,
	sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dwc2), 0));
	sysbus_connect_irq(SYS_BUS_DEVICE(&s->dwc2), 0,
	qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
	INTERRUPT_USB));

	create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
	create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
	create_unimp(s, &s->powermgt, "bcm2835-powermgt", PM_OFFSET, 0x114);
	create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
	create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
	create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
	create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
	create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
	create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
	create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
	create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
	create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
	create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
	create_unimp(s, &s->v3d, "bcm2835-v3d", V3D_OFFSET, 0x1000);
	create_unimp(s, &s->sdramc, "bcm2835-sdramc", SDRAMC_OFFSET, 0x100);
	}

	static void bcm2835_peripherals_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = bcm2835_peripherals_realize;
	}

	static const TypeInfo bcm2835_peripherals_type_info = {
	.name = TYPE_BCM2835_PERIPHERALS,
	.parent = TYPE_SYS_BUS_DEVICE,
	.instance_size = sizeof(BCM2835PeripheralState),
	.instance_init = bcm2835_peripherals_init,
	.class_init = bcm2835_peripherals_class_init,
	};

	static void bcm2835_peripherals_register_types(void)
	{
	type_register_static(&bcm2835_peripherals_type_info);
	}

	type_init(bcm2835_peripherals_register_types)