| /* |
| * 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 code is licensed under the GNU GPLv2 and later. |
| */ |
| |
| #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 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); |
| object_property_add_child(obj, "peripheral-io", OBJECT(&s->peri_mr), NULL); |
| 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); |
| object_property_add_child(obj, "gpu-bus", OBJECT(&s->gpu_bus_mr), NULL); |
| |
| /* 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 */ |
| sysbus_init_child_obj(obj, "ic", &s->ic, sizeof(s->ic), TYPE_BCM2835_IC); |
| |
| /* UART0 */ |
| sysbus_init_child_obj(obj, "uart0", &s->uart0, sizeof(s->uart0), |
| TYPE_PL011); |
| |
| /* AUX / UART1 */ |
| sysbus_init_child_obj(obj, "aux", &s->aux, sizeof(s->aux), |
| TYPE_BCM2835_AUX); |
| |
| /* Mailboxes */ |
| sysbus_init_child_obj(obj, "mbox", &s->mboxes, sizeof(s->mboxes), |
| TYPE_BCM2835_MBOX); |
| |
| object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", |
| OBJECT(&s->mbox_mr), &error_abort); |
| |
| /* Framebuffer */ |
| sysbus_init_child_obj(obj, "fb", &s->fb, sizeof(s->fb), TYPE_BCM2835_FB); |
| object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size", |
| &error_abort); |
| |
| object_property_add_const_link(OBJECT(&s->fb), "dma-mr", |
| OBJECT(&s->gpu_bus_mr), &error_abort); |
| |
| /* Property channel */ |
| sysbus_init_child_obj(obj, "property", &s->property, sizeof(s->property), |
| TYPE_BCM2835_PROPERTY); |
| object_property_add_alias(obj, "board-rev", OBJECT(&s->property), |
| "board-rev", &error_abort); |
| |
| object_property_add_const_link(OBJECT(&s->property), "fb", |
| OBJECT(&s->fb), &error_abort); |
| object_property_add_const_link(OBJECT(&s->property), "dma-mr", |
| OBJECT(&s->gpu_bus_mr), &error_abort); |
| |
| /* Random Number Generator */ |
| sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng), |
| TYPE_BCM2835_RNG); |
| |
| /* Extended Mass Media Controller */ |
| sysbus_init_child_obj(obj, "sdhci", &s->sdhci, sizeof(s->sdhci), |
| TYPE_SYSBUS_SDHCI); |
| |
| /* SDHOST */ |
| sysbus_init_child_obj(obj, "sdhost", &s->sdhost, sizeof(s->sdhost), |
| TYPE_BCM2835_SDHOST); |
| |
| /* DMA Channels */ |
| sysbus_init_child_obj(obj, "dma", &s->dma, sizeof(s->dma), |
| TYPE_BCM2835_DMA); |
| |
| object_property_add_const_link(OBJECT(&s->dma), "dma-mr", |
| OBJECT(&s->gpu_bus_mr), &error_abort); |
| |
| /* GPIO */ |
| sysbus_init_child_obj(obj, "gpio", &s->gpio, sizeof(s->gpio), |
| TYPE_BCM2835_GPIO); |
| |
| object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhci", |
| OBJECT(&s->sdhci.sdbus), &error_abort); |
| object_property_add_const_link(OBJECT(&s->gpio), "sdbus-sdhost", |
| OBJECT(&s->sdhost.sdbus), &error_abort); |
| } |
| |
| 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 */ |
| object_property_set_bool(OBJECT(&s->ic), true, "realized", &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)); |
| |
| /* UART0 */ |
| qdev_prop_set_chr(DEVICE(&s->uart0), "chardev", serial_hd(0)); |
| object_property_set_bool(OBJECT(&s->uart0), true, "realized", &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_UART)); |
| /* AUX / UART1 */ |
| qdev_prop_set_chr(DEVICE(&s->aux), "chardev", serial_hd(1)); |
| |
| object_property_set_bool(OBJECT(&s->aux), true, "realized", &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| memory_region_add_subregion(&s->peri_mr, UART1_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 */ |
| object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &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; |
| } |
| |
| object_property_set_bool(OBJECT(&s->fb), true, "realized", &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 */ |
| object_property_set_bool(OBJECT(&s->property), true, "realized", &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 */ |
| object_property_set_bool(OBJECT(&s->rng), true, "realized", &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; |
| } |
| |
| object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| memory_region_add_subregion(&s->peri_mr, EMMC_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 */ |
| object_property_set_bool(OBJECT(&s->sdhost), true, "realized", &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 */ |
| object_property_set_bool(OBJECT(&s->dma), true, "realized", &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)); |
| } |
| |
| /* GPIO */ |
| object_property_set_bool(OBJECT(&s->gpio), true, "realized", &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", |
| &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| } |
| |
| 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) |