| /* |
| * BCM2838 SoC emulation |
| * |
| * Copyright (C) 2022 Ovchinnikov Vitalii <vitalii.ovchinnikov@auriga.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "qemu/module.h" |
| #include "hw/arm/raspi_platform.h" |
| #include "hw/sysbus.h" |
| #include "hw/arm/bcm2838.h" |
| #include "trace.h" |
| |
| #define GIC400_MAINTENANCE_IRQ 9 |
| #define GIC400_TIMER_NS_EL2_IRQ 10 |
| #define GIC400_TIMER_VIRT_IRQ 11 |
| #define GIC400_LEGACY_FIQ 12 |
| #define GIC400_TIMER_S_EL1_IRQ 13 |
| #define GIC400_TIMER_NS_EL1_IRQ 14 |
| #define GIC400_LEGACY_IRQ 15 |
| |
| /* Number of external interrupt lines to configure the GIC with */ |
| #define GIC_NUM_IRQS 192 |
| |
| #define PPI(cpu, irq) (GIC_NUM_IRQS + (cpu) * GIC_INTERNAL + GIC_NR_SGIS + irq) |
| |
| #define GIC_BASE_OFS 0x0000 |
| #define GIC_DIST_OFS 0x1000 |
| #define GIC_CPU_OFS 0x2000 |
| #define GIC_VIFACE_THIS_OFS 0x4000 |
| #define GIC_VIFACE_OTHER_OFS(cpu) (0x5000 + (cpu) * 0x200) |
| #define GIC_VCPU_OFS 0x6000 |
| |
| #define VIRTUAL_PMU_IRQ 7 |
| |
| static void bcm2838_gic_set_irq(void *opaque, int irq, int level) |
| { |
| BCM2838State *s = (BCM2838State *)opaque; |
| |
| trace_bcm2838_gic_set_irq(irq, level); |
| qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); |
| } |
| |
| static void bcm2838_init(Object *obj) |
| { |
| BCM2838State *s = BCM2838(obj); |
| |
| object_initialize_child(obj, "peripherals", &s->peripherals, |
| TYPE_BCM2838_PERIPHERALS); |
| object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals), |
| "board-rev"); |
| object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals), |
| "vcram-size"); |
| object_property_add_alias(obj, "vcram-base", OBJECT(&s->peripherals), |
| "vcram-base"); |
| object_property_add_alias(obj, "command-line", OBJECT(&s->peripherals), |
| "command-line"); |
| |
| object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC); |
| } |
| |
| static void bcm2838_realize(DeviceState *dev, Error **errp) |
| { |
| BCM2838State *s = BCM2838(dev); |
| BCM283XBaseState *s_base = BCM283X_BASE(dev); |
| BCM283XBaseClass *bc_base = BCM283X_BASE_GET_CLASS(dev); |
| BCM2838PeripheralState *ps = BCM2838_PERIPHERALS(&s->peripherals); |
| BCMSocPeripheralBaseState *ps_base = |
| BCM_SOC_PERIPHERALS_BASE(&s->peripherals); |
| |
| DeviceState *gicdev = NULL; |
| |
| if (!bcm283x_common_realize(dev, ps_base, errp)) { |
| return; |
| } |
| sysbus_mmio_map_overlap(SYS_BUS_DEVICE(ps), 1, BCM2838_PERI_LOW_BASE, 1); |
| |
| /* bcm2836 interrupt controller (and mailboxes, etc.) */ |
| if (!sysbus_realize(SYS_BUS_DEVICE(&s_base->control), errp)) { |
| return; |
| } |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s_base->control), 0, bc_base->ctrl_base); |
| |
| /* Create cores */ |
| for (int n = 0; n < bc_base->core_count; n++) { |
| |
| object_property_set_int(OBJECT(&s_base->cpu[n].core), "mp-affinity", |
| (bc_base->clusterid << 8) | n, &error_abort); |
| |
| /* set periphbase/CBAR value for CPU-local registers */ |
| object_property_set_int(OBJECT(&s_base->cpu[n].core), "reset-cbar", |
| bc_base->peri_base, &error_abort); |
| |
| /* start powered off if not enabled */ |
| object_property_set_bool(OBJECT(&s_base->cpu[n].core), |
| "start-powered-off", |
| n >= s_base->enabled_cpus, &error_abort); |
| |
| if (!qdev_realize(DEVICE(&s_base->cpu[n].core), NULL, errp)) { |
| return; |
| } |
| } |
| |
| if (!object_property_set_uint(OBJECT(&s->gic), "revision", 2, errp)) { |
| return; |
| } |
| |
| if (!object_property_set_uint(OBJECT(&s->gic), "num-cpu", BCM283X_NCPUS, |
| errp)) { |
| return; |
| } |
| |
| if (!object_property_set_uint(OBJECT(&s->gic), "num-irq", |
| GIC_NUM_IRQS + GIC_INTERNAL, errp)) { |
| return; |
| } |
| |
| if (!object_property_set_bool(OBJECT(&s->gic), |
| "has-virtualization-extensions", true, |
| errp)) { |
| return; |
| } |
| |
| if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) { |
| return; |
| } |
| |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 0, |
| bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_DIST_OFS); |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 1, |
| bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_CPU_OFS); |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 2, |
| bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_VIFACE_THIS_OFS); |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 3, |
| bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_VCPU_OFS); |
| |
| for (int n = 0; n < BCM283X_NCPUS; n++) { |
| sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 4 + n, |
| bc_base->ctrl_base + BCM2838_GIC_BASE |
| + GIC_VIFACE_OTHER_OFS(n)); |
| } |
| |
| gicdev = DEVICE(&s->gic); |
| |
| for (int n = 0; n < BCM283X_NCPUS; n++) { |
| DeviceState *cpudev = DEVICE(&s_base->cpu[n]); |
| |
| /* Connect the GICv2 outputs to the CPU */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n, |
| qdev_get_gpio_in(cpudev, ARM_CPU_IRQ)); |
| sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + BCM283X_NCPUS, |
| qdev_get_gpio_in(cpudev, ARM_CPU_FIQ)); |
| sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 2 * BCM283X_NCPUS, |
| qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ)); |
| sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 3 * BCM283X_NCPUS, |
| qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ)); |
| |
| sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 4 * BCM283X_NCPUS, |
| qdev_get_gpio_in(gicdev, |
| PPI(n, GIC400_MAINTENANCE_IRQ))); |
| |
| /* Connect timers from the CPU to the interrupt controller */ |
| qdev_connect_gpio_out(cpudev, GTIMER_PHYS, |
| qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_NS_EL1_IRQ))); |
| qdev_connect_gpio_out(cpudev, GTIMER_VIRT, |
| qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_VIRT_IRQ))); |
| qdev_connect_gpio_out(cpudev, GTIMER_HYP, |
| qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_NS_EL2_IRQ))); |
| qdev_connect_gpio_out(cpudev, GTIMER_SEC, |
| qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_S_EL1_IRQ))); |
| /* PMU interrupt */ |
| qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0, |
| qdev_get_gpio_in(gicdev, PPI(n, VIRTUAL_PMU_IRQ))); |
| } |
| |
| /* Connect UART0 to the interrupt controller */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->uart0), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_UART0)); |
| |
| /* Connect AUX / UART1 to the interrupt controller */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->aux), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_AUX_UART1)); |
| |
| /* Connect VC mailbox to the interrupt controller */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->mboxes), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_MBOX)); |
| |
| /* Connect SD host to the interrupt controller */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->sdhost), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_SDHOST)); |
| |
| /* According to DTS, EMMC and EMMC2 share one irq */ |
| DeviceState *mmc_irq_orgate = DEVICE(&ps->mmc_irq_orgate); |
| |
| /* Connect EMMC and EMMC2 to the interrupt controller */ |
| qdev_connect_gpio_out(mmc_irq_orgate, 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_EMMC_EMMC2)); |
| |
| /* Connect USB OTG and MPHI to the interrupt controller */ |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->mphi), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_MPHI)); |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->dwc2), 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DWC2)); |
| |
| /* Connect DMA 0-6 to the interrupt controller */ |
| for (int n = GIC_SPI_INTERRUPT_DMA_0; n <= GIC_SPI_INTERRUPT_DMA_6; n++) { |
| sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->dma), |
| n - GIC_SPI_INTERRUPT_DMA_0, |
| qdev_get_gpio_in(gicdev, n)); |
| } |
| |
| /* According to DTS, DMA 7 and 8 share one irq */ |
| DeviceState *dma_7_8_irq_orgate = DEVICE(&ps->dma_7_8_irq_orgate); |
| |
| /* Connect DMA 7-8 to the interrupt controller */ |
| qdev_connect_gpio_out(dma_7_8_irq_orgate, 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DMA_7_8)); |
| |
| /* According to DTS, DMA 9 and 10 share one irq */ |
| DeviceState *dma_9_10_irq_orgate = DEVICE(&ps->dma_9_10_irq_orgate); |
| |
| /* Connect DMA 9-10 to the interrupt controller */ |
| qdev_connect_gpio_out(dma_9_10_irq_orgate, 0, |
| qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DMA_9_10)); |
| |
| /* Pass through inbound GPIO lines to the GIC */ |
| qdev_init_gpio_in(dev, bcm2838_gic_set_irq, GIC_NUM_IRQS); |
| |
| /* Pass through outbound IRQ lines from the GIC */ |
| qdev_pass_gpios(DEVICE(&s->gic), DEVICE(&s->peripherals), NULL); |
| } |
| |
| static void bcm2838_class_init(ObjectClass *oc, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(oc); |
| BCM283XBaseClass *bc_base = BCM283X_BASE_CLASS(oc); |
| |
| bc_base->cpu_type = ARM_CPU_TYPE_NAME("cortex-a72"); |
| bc_base->core_count = BCM283X_NCPUS; |
| bc_base->peri_base = 0xfe000000; |
| bc_base->ctrl_base = 0xff800000; |
| bc_base->clusterid = 0x0; |
| dc->realize = bcm2838_realize; |
| } |
| |
| static const TypeInfo bcm2838_type = { |
| .name = TYPE_BCM2838, |
| .parent = TYPE_BCM283X_BASE, |
| .instance_size = sizeof(BCM2838State), |
| .instance_init = bcm2838_init, |
| .class_size = sizeof(BCM283XBaseClass), |
| .class_init = bcm2838_class_init, |
| }; |
| |
| static void bcm2838_register_types(void) |
| { |
| type_register_static(&bcm2838_type); |
| } |
| |
| type_init(bcm2838_register_types); |