/* * 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); 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", &err); if (obj == NULL) { error_setg(errp, "%s: required ram link not found: %s", __func__, error_get_pretty(err)); return; } 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->ic), &err); if (err) { error_propagate(errp, err); return; } 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->systmr), &err); if (err) { error_propagate(errp, err); 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_ARM_IRQ, INTERRUPT_ARM_TIMER)); /* UART0 */ qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); sysbus_realize(SYS_BUS_DEVICE(&s->uart0), &err); if (err) { error_propagate(errp, err); 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)); sysbus_realize(SYS_BUS_DEVICE(&s->aux), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->mboxes), &err); if (err) { error_propagate(errp, err); 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; } object_property_set_uint(OBJECT(&s->fb), ram_size - vcram_size, "vcram-base", &err); if (err) { error_propagate(errp, err); return; } sysbus_realize(SYS_BUS_DEVICE(&s->fb), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->property), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->rng), &err); if (err) { error_propagate(errp, err); 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), 3, "sd-spec-version", &err); object_property_set_uint(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", &err); object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk", &err); if (err) { error_propagate(errp, err); return; } sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->sdhost), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->dma), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->thermal), &err); if (err) { error_propagate(errp, err); return; } memory_region_add_subregion(&s->peri_mr, THERMAL_OFFSET, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->thermal), 0)); /* GPIO */ sysbus_realize(SYS_BUS_DEVICE(&s->gpio), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->mphi), &err); if (err) { error_propagate(errp, err); 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 */ sysbus_realize(SYS_BUS_DEVICE(&s->dwc2), &err); if (err) { error_propagate(errp, err); 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->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40); create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000); create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000); 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->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)