From 7c62aeb82a143f4fcb1e6e419175cd120407deac Mon Sep 17 00:00:00 2001 From: Andrew Baumann Date: Fri, 29 Jan 2016 14:50:40 -0800 Subject: [PATCH] bcm2835_peripherals: add rollup device for bcm2835 peripherals This device maintains all the non-CPU peripherals on bcm2835 (Pi1) which are also present on bcm2836 (Pi2). It also implements the private address spaces used for DMA and mailboxes. Reviewed-by: Peter Crosthwaite Signed-off-by: Andrew Baumann Signed-off-by: Peter Maydell --- hw/arm/Makefile.objs | 1 + hw/arm/bcm2835_peripherals.c | 204 +++++++++++++++++++++++++++++++++++ include/hw/arm/bcm2835_peripherals.h | 42 ++++++++ include/hw/arm/raspi_platform.h | 128 ++++++++++++++++++++++ 4 files changed, 375 insertions(+) create mode 100644 hw/arm/bcm2835_peripherals.c create mode 100644 include/hw/arm/bcm2835_peripherals.h create mode 100644 include/hw/arm/raspi_platform.h diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs index 2195b60fac..82cc1424ac 100644 --- a/hw/arm/Makefile.objs +++ b/hw/arm/Makefile.objs @@ -11,6 +11,7 @@ obj-y += armv7m.o exynos4210.o pxa2xx.o pxa2xx_gpio.o pxa2xx_pic.o obj-$(CONFIG_DIGIC) += digic.o obj-y += omap1.o omap2.o strongarm.o obj-$(CONFIG_ALLWINNER_A10) += allwinner-a10.o cubieboard.o +obj-$(CONFIG_RASPI) += bcm2835_peripherals.o obj-$(CONFIG_STM32F205_SOC) += stm32f205_soc.o obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp.o xlnx-ep108.o obj-$(CONFIG_FSL_IMX25) += fsl-imx25.o imx25_pdk.o diff --git a/hw/arm/bcm2835_peripherals.c b/hw/arm/bcm2835_peripherals.c new file mode 100644 index 0000000000..18b72ecb69 --- /dev/null +++ b/hw/arm/bcm2835_peripherals.c @@ -0,0 +1,204 @@ +/* + * 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 "hw/arm/bcm2835_peripherals.h" +#include "hw/misc/bcm2835_mbox_defs.h" +#include "hw/arm/raspi_platform.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 0x52034b4 + +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 */ + object_initialize(&s->ic, sizeof(s->ic), TYPE_BCM2835_IC); + object_property_add_child(obj, "ic", OBJECT(&s->ic), NULL); + qdev_set_parent_bus(DEVICE(&s->ic), sysbus_get_default()); + + /* UART0 */ + s->uart0 = SYS_BUS_DEVICE(object_new("pl011")); + object_property_add_child(obj, "uart0", OBJECT(s->uart0), NULL); + qdev_set_parent_bus(DEVICE(s->uart0), sysbus_get_default()); + + /* Mailboxes */ + object_initialize(&s->mboxes, sizeof(s->mboxes), TYPE_BCM2835_MBOX); + object_property_add_child(obj, "mbox", OBJECT(&s->mboxes), NULL); + qdev_set_parent_bus(DEVICE(&s->mboxes), sysbus_get_default()); + + object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr", + OBJECT(&s->mbox_mr), &error_abort); + + /* Property channel */ + object_initialize(&s->property, sizeof(s->property), TYPE_BCM2835_PROPERTY); + object_property_add_child(obj, "property", OBJECT(&s->property), NULL); + qdev_set_parent_bus(DEVICE(&s->property), sysbus_get_default()); + + object_property_add_const_link(OBJECT(&s->property), "dma-mr", + OBJECT(&s->gpu_bus_mr), &error_abort); + + /* Extended Mass Media Controller */ + object_initialize(&s->sdhci, sizeof(s->sdhci), TYPE_SYSBUS_SDHCI); + object_property_add_child(obj, "sdhci", OBJECT(&s->sdhci), NULL); + qdev_set_parent_bus(DEVICE(&s->sdhci), sysbus_get_default()); +} + +static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp) +{ + BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev); + Object *obj; + MemoryRegion *ram; + Error *err = NULL; + uint32_t ram_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 */ + 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(s->uart0, 0)); + sysbus_connect_irq(s->uart0, 0, + qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ, + INTERRUPT_UART)); + + /* 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)); + + /* Property channel */ + object_property_set_int(OBJECT(&s->property), ram_size, "ram-size", &err); + if (err) { + error_propagate(errp, err); + return; + } + + 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)); + + /* Extended Mass Media Controller */ + object_property_set_int(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg", + &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)); +} + +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) diff --git a/include/hw/arm/bcm2835_peripherals.h b/include/hw/arm/bcm2835_peripherals.h new file mode 100644 index 0000000000..5d888dca53 --- /dev/null +++ b/include/hw/arm/bcm2835_peripherals.h @@ -0,0 +1,42 @@ +/* + * 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. + */ + +#ifndef BCM2835_PERIPHERALS_H +#define BCM2835_PERIPHERALS_H + +#include "qemu-common.h" +#include "exec/address-spaces.h" +#include "hw/sysbus.h" +#include "hw/intc/bcm2835_ic.h" +#include "hw/misc/bcm2835_property.h" +#include "hw/misc/bcm2835_mbox.h" +#include "hw/sd/sdhci.h" + +#define TYPE_BCM2835_PERIPHERALS "bcm2835-peripherals" +#define BCM2835_PERIPHERALS(obj) \ + OBJECT_CHECK(BCM2835PeripheralState, (obj), TYPE_BCM2835_PERIPHERALS) + +typedef struct BCM2835PeripheralState { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + MemoryRegion peri_mr, peri_mr_alias, gpu_bus_mr, mbox_mr; + MemoryRegion ram_alias[4]; + qemu_irq irq, fiq; + + SysBusDevice *uart0; + BCM2835ICState ic; + BCM2835PropertyState property; + BCM2835MboxState mboxes; + SDHCIState sdhci; +} BCM2835PeripheralState; + +#endif /* BCM2835_PERIPHERALS_H */ diff --git a/include/hw/arm/raspi_platform.h b/include/hw/arm/raspi_platform.h new file mode 100644 index 0000000000..6467e88ae6 --- /dev/null +++ b/include/hw/arm/raspi_platform.h @@ -0,0 +1,128 @@ +/* + * bcm2708 aka bcm2835/2836 aka Raspberry Pi/Pi2 SoC platform defines + * + * These definitions are derived from those in Raspbian Linux at + * arch/arm/mach-{bcm2708,bcm2709}/include/mach/platform.h + * where they carry the following notice: + * + * Copyright (C) 2010 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#define MCORE_OFFSET 0x0000 /* Fake frame buffer device + * (the multicore sync block) */ +#define IC0_OFFSET 0x2000 +#define ST_OFFSET 0x3000 /* System Timer */ +#define MPHI_OFFSET 0x6000 /* Message-based Parallel Host Intf. */ +#define DMA_OFFSET 0x7000 /* DMA controller, channels 0-14 */ +#define ARM_OFFSET 0xB000 /* BCM2708 ARM control block */ +#define ARMCTRL_OFFSET (ARM_OFFSET + 0x000) +#define ARMCTRL_IC_OFFSET (ARM_OFFSET + 0x200) /* Interrupt controller */ +#define ARMCTRL_TIMER0_1_OFFSET (ARM_OFFSET + 0x400) /* Timer 0 and 1 */ +#define ARMCTRL_0_SBM_OFFSET (ARM_OFFSET + 0x800) /* User 0 (ARM) Semaphores + * Doorbells & Mailboxes */ +#define PM_OFFSET 0x100000 /* Power Management, Reset controller + * and Watchdog registers */ +#define PCM_CLOCK_OFFSET 0x101098 +#define RNG_OFFSET 0x104000 +#define GPIO_OFFSET 0x200000 +#define UART0_OFFSET 0x201000 +#define MMCI0_OFFSET 0x202000 +#define I2S_OFFSET 0x203000 +#define SPI0_OFFSET 0x204000 +#define BSC0_OFFSET 0x205000 /* BSC0 I2C/TWI */ +#define UART1_OFFSET 0x215000 +#define EMMC_OFFSET 0x300000 +#define SMI_OFFSET 0x600000 +#define BSC1_OFFSET 0x804000 /* BSC1 I2C/TWI */ +#define USB_OFFSET 0x980000 /* DTC_OTG USB controller */ +#define DMA15_OFFSET 0xE05000 /* DMA controller, channel 15 */ + +/* GPU interrupts */ +#define INTERRUPT_TIMER0 0 +#define INTERRUPT_TIMER1 1 +#define INTERRUPT_TIMER2 2 +#define INTERRUPT_TIMER3 3 +#define INTERRUPT_CODEC0 4 +#define INTERRUPT_CODEC1 5 +#define INTERRUPT_CODEC2 6 +#define INTERRUPT_JPEG 7 +#define INTERRUPT_ISP 8 +#define INTERRUPT_USB 9 +#define INTERRUPT_3D 10 +#define INTERRUPT_TRANSPOSER 11 +#define INTERRUPT_MULTICORESYNC0 12 +#define INTERRUPT_MULTICORESYNC1 13 +#define INTERRUPT_MULTICORESYNC2 14 +#define INTERRUPT_MULTICORESYNC3 15 +#define INTERRUPT_DMA0 16 +#define INTERRUPT_DMA1 17 +#define INTERRUPT_DMA2 18 +#define INTERRUPT_DMA3 19 +#define INTERRUPT_DMA4 20 +#define INTERRUPT_DMA5 21 +#define INTERRUPT_DMA6 22 +#define INTERRUPT_DMA7 23 +#define INTERRUPT_DMA8 24 +#define INTERRUPT_DMA9 25 +#define INTERRUPT_DMA10 26 +#define INTERRUPT_DMA11 27 +#define INTERRUPT_DMA12 28 +#define INTERRUPT_AUX 29 +#define INTERRUPT_ARM 30 +#define INTERRUPT_VPUDMA 31 +#define INTERRUPT_HOSTPORT 32 +#define INTERRUPT_VIDEOSCALER 33 +#define INTERRUPT_CCP2TX 34 +#define INTERRUPT_SDC 35 +#define INTERRUPT_DSI0 36 +#define INTERRUPT_AVE 37 +#define INTERRUPT_CAM0 38 +#define INTERRUPT_CAM1 39 +#define INTERRUPT_HDMI0 40 +#define INTERRUPT_HDMI1 41 +#define INTERRUPT_PIXELVALVE1 42 +#define INTERRUPT_I2CSPISLV 43 +#define INTERRUPT_DSI1 44 +#define INTERRUPT_PWA0 45 +#define INTERRUPT_PWA1 46 +#define INTERRUPT_CPR 47 +#define INTERRUPT_SMI 48 +#define INTERRUPT_GPIO0 49 +#define INTERRUPT_GPIO1 50 +#define INTERRUPT_GPIO2 51 +#define INTERRUPT_GPIO3 52 +#define INTERRUPT_I2C 53 +#define INTERRUPT_SPI 54 +#define INTERRUPT_I2SPCM 55 +#define INTERRUPT_SDIO 56 +#define INTERRUPT_UART 57 +#define INTERRUPT_SLIMBUS 58 +#define INTERRUPT_VEC 59 +#define INTERRUPT_CPG 60 +#define INTERRUPT_RNG 61 +#define INTERRUPT_ARASANSDIO 62 +#define INTERRUPT_AVSPMON 63 + +/* ARM CPU IRQs use a private number space */ +#define INTERRUPT_ARM_TIMER 0 +#define INTERRUPT_ARM_MAILBOX 1 +#define INTERRUPT_ARM_DOORBELL_0 2 +#define INTERRUPT_ARM_DOORBELL_1 3 +#define INTERRUPT_VPU0_HALTED 4 +#define INTERRUPT_VPU1_HALTED 5 +#define INTERRUPT_ILLEGAL_TYPE0 6 +#define INTERRUPT_ILLEGAL_TYPE1 7 -- 2.11.0