diff options
Diffstat (limited to 'hw/arm/bcm2835_peripherals.c')
| -rw-r--r-- | hw/arm/bcm2835_peripherals.c | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/hw/arm/bcm2835_peripherals.c b/hw/arm/bcm2835_peripherals.c new file mode 100644 index 00000000..3c2a4160 --- /dev/null +++ b/hw/arm/bcm2835_peripherals.c @@ -0,0 +1,439 @@ +/* + * 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 + +/* + * According to Linux driver & DTS, dma channels 0--10 have separate IRQ, + * while channels 11--14 share one IRQ: + */ +#define SEPARATE_DMA_IRQ_MAX 10 +#define ORGATED_DMA_IRQ_COUNT 4 + +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_initialize_child(obj, "orgated-dma-irq", + &s->orgated_dma_irq, TYPE_OR_IRQ); + object_property_set_int(OBJECT(&s->orgated_dma_irq), "num-lines", + ORGATED_DMA_IRQ_COUNT, &error_abort); + + 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)); + + /* Power Management */ + object_initialize_child(obj, "powermgt", &s->powermgt, + TYPE_BCM2835_POWERMGT); +} + +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 <= SEPARATE_DMA_IRQ_MAX; 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)); + } + if (!qdev_realize(DEVICE(&s->orgated_dma_irq), NULL, errp)) { + return; + } + for (n = 0; n < ORGATED_DMA_IRQ_COUNT; n++) { + sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), + SEPARATE_DMA_IRQ_MAX + 1 + n, + qdev_get_gpio_in(DEVICE(&s->orgated_dma_irq), n)); + } + qdev_connect_gpio_out(DEVICE(&s->orgated_dma_irq), 0, + qdev_get_gpio_in_named(DEVICE(&s->ic), + BCM2835_IC_GPU_IRQ, + INTERRUPT_DMA0 + SEPARATE_DMA_IRQ_MAX + 1)); + + /* 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)); + + /* Power Management */ + if (!sysbus_realize(SYS_BUS_DEVICE(&s->powermgt), errp)) { + return; + } + + memory_region_add_subregion(&s->peri_mr, PM_OFFSET, + sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->powermgt), 0)); + + 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->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) |