/* * 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-common.h" #include "cpu.h" #include "hw/arm/bcm2836.h" #include "hw/arm/raspi_platform.h" #include "hw/sysbus.h" /* Peripheral base address seen by the CPU */ #define BCM2836_PERI_BASE 0x3F000000 /* "QA7" (Pi2) interrupt controller and mailboxes etc. */ #define BCM2836_CONTROL_BASE 0x40000000 struct BCM283XInfo { const char *name; const char *cpu_type; int clusterid; }; static const BCM283XInfo bcm283x_socs[] = { { .name = TYPE_BCM2836, .cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"), .clusterid = 0xf, }, #ifdef TARGET_AARCH64 { .name = TYPE_BCM2837, .cpu_type = ARM_CPU_TYPE_NAME("cortex-a53"), .clusterid = 0x0, }, #endif }; static void bcm2836_init(Object *obj) { BCM283XState *s = BCM283X(obj); BCM283XClass *bc = BCM283X_GET_CLASS(obj); const BCM283XInfo *info = bc->info; int n; for (n = 0; n < BCM283X_NCPUS; n++) { object_initialize(&s->cpus[n], sizeof(s->cpus[n]), info->cpu_type); object_property_add_child(obj, "cpu[*]", OBJECT(&s->cpus[n]), &error_abort); } object_initialize(&s->control, sizeof(s->control), TYPE_BCM2836_CONTROL); object_property_add_child(obj, "control", OBJECT(&s->control), NULL); qdev_set_parent_bus(DEVICE(&s->control), sysbus_get_default()); object_initialize(&s->peripherals, sizeof(s->peripherals), TYPE_BCM2835_PERIPHERALS); object_property_add_child(obj, "peripherals", OBJECT(&s->peripherals), &error_abort); object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals), "board-rev", &error_abort); object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals), "vcram-size", &error_abort); qdev_set_parent_bus(DEVICE(&s->peripherals), sysbus_get_default()); } static void bcm2836_realize(DeviceState *dev, Error **errp) { BCM283XState *s = BCM283X(dev); BCM283XClass *bc = BCM283X_GET_CLASS(dev); const BCM283XInfo *info = bc->info; Object *obj; Error *err = NULL; int n; /* common peripherals from bcm2835 */ 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; } object_property_add_const_link(OBJECT(&s->peripherals), "ram", obj, &err); if (err) { error_propagate(errp, err); return; } object_property_set_bool(OBJECT(&s->peripherals), true, "realized", &err); if (err) { error_propagate(errp, err); return; } object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->peripherals), "sd-bus", &err); if (err) { error_propagate(errp, err); return; } sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0, BCM2836_PERI_BASE, 1); /* bcm2836 interrupt controller (and mailboxes, etc.) */ object_property_set_bool(OBJECT(&s->control), true, "realized", &err); if (err) { error_propagate(errp, err); return; } sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, BCM2836_CONTROL_BASE); sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0, qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-irq", 0)); sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1, qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-fiq", 0)); for (n = 0; n < BCM283X_NCPUS; n++) { /* TODO: this should be converted to a property of ARM_CPU */ s->cpus[n].mp_affinity = (info->clusterid << 8) | n; /* set periphbase/CBAR value for CPU-local registers */ object_property_set_int(OBJECT(&s->cpus[n]), BCM2836_PERI_BASE + MCORE_OFFSET, "reset-cbar", &err); if (err) { error_propagate(errp, err); return; } /* start powered off if not enabled */ object_property_set_bool(OBJECT(&s->cpus[n]), n >= s->enabled_cpus, "start-powered-off", &err); if (err) { error_propagate(errp, err); return; } object_property_set_bool(OBJECT(&s->cpus[n]), true, "realized", &err); if (err) { error_propagate(errp, err); return; } /* Connect irq/fiq outputs from the interrupt controller. */ qdev_connect_gpio_out_named(DEVICE(&s->control), "irq", n, qdev_get_gpio_in(DEVICE(&s->cpus[n]), ARM_CPU_IRQ)); qdev_connect_gpio_out_named(DEVICE(&s->control), "fiq", n, qdev_get_gpio_in(DEVICE(&s->cpus[n]), ARM_CPU_FIQ)); /* Connect timers from the CPU to the interrupt controller */ qdev_connect_gpio_out(DEVICE(&s->cpus[n]), GTIMER_PHYS, qdev_get_gpio_in_named(DEVICE(&s->control), "cntpnsirq", n)); qdev_connect_gpio_out(DEVICE(&s->cpus[n]), GTIMER_VIRT, qdev_get_gpio_in_named(DEVICE(&s->control), "cntvirq", n)); qdev_connect_gpio_out(DEVICE(&s->cpus[n]), GTIMER_HYP, qdev_get_gpio_in_named(DEVICE(&s->control), "cnthpirq", n)); qdev_connect_gpio_out(DEVICE(&s->cpus[n]), GTIMER_SEC, qdev_get_gpio_in_named(DEVICE(&s->control), "cntpsirq", n)); } } static Property bcm2836_props[] = { DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus, BCM283X_NCPUS), DEFINE_PROP_END_OF_LIST() }; static void bcm283x_class_init(ObjectClass *oc, void *data) { DeviceClass *dc = DEVICE_CLASS(oc); BCM283XClass *bc = BCM283X_CLASS(oc); bc->info = data; dc->realize = bcm2836_realize; dc->props = bcm2836_props; /* Reason: Must be wired up in code (see raspi_init() function) */ dc->user_creatable = false; } static const TypeInfo bcm283x_type_info = { .name = TYPE_BCM283X, .parent = TYPE_DEVICE, .instance_size = sizeof(BCM283XState), .instance_init = bcm2836_init, .class_size = sizeof(BCM283XClass), .abstract = true, }; static void bcm2836_register_types(void) { int i; type_register_static(&bcm283x_type_info); for (i = 0; i < ARRAY_SIZE(bcm283x_socs); i++) { TypeInfo ti = { .name = bcm283x_socs[i].name, .parent = TYPE_BCM283X, .class_init = bcm283x_class_init, .class_data = (void *) &bcm283x_socs[i], }; type_register(&ti); } } type_init(bcm2836_register_types)