1 /* 2 * Raspberry Pi emulation (c) 2012 Gregory Estrade 3 * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous 4 * 5 * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft 6 * Written by Andrew Baumann 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or later. 9 * See the COPYING file in the top-level directory. 10 */ 11 12 #include "qemu/osdep.h" 13 #include "qapi/error.h" 14 #include "qemu/module.h" 15 #include "cpu.h" 16 #include "hw/arm/bcm2836.h" 17 #include "hw/arm/raspi_platform.h" 18 #include "hw/sysbus.h" 19 20 struct BCM283XInfo { 21 const char *name; 22 const char *cpu_type; 23 hwaddr peri_base; /* Peripheral base address seen by the CPU */ 24 hwaddr ctrl_base; /* Interrupt controller and mailboxes etc. */ 25 int clusterid; 26 }; 27 28 static const BCM283XInfo bcm283x_socs[] = { 29 { 30 .name = TYPE_BCM2836, 31 .cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"), 32 .peri_base = 0x3f000000, 33 .ctrl_base = 0x40000000, 34 .clusterid = 0xf, 35 }, 36 #ifdef TARGET_AARCH64 37 { 38 .name = TYPE_BCM2837, 39 .cpu_type = ARM_CPU_TYPE_NAME("cortex-a53"), 40 .peri_base = 0x3f000000, 41 .ctrl_base = 0x40000000, 42 .clusterid = 0x0, 43 }, 44 #endif 45 }; 46 47 static void bcm2836_init(Object *obj) 48 { 49 BCM283XState *s = BCM283X(obj); 50 BCM283XClass *bc = BCM283X_GET_CLASS(obj); 51 const BCM283XInfo *info = bc->info; 52 int n; 53 54 for (n = 0; n < BCM283X_NCPUS; n++) { 55 object_initialize_child(obj, "cpu[*]", &s->cpu[n].core, 56 info->cpu_type); 57 } 58 59 object_initialize_child(obj, "control", &s->control, TYPE_BCM2836_CONTROL); 60 61 object_initialize_child(obj, "peripherals", &s->peripherals, 62 TYPE_BCM2835_PERIPHERALS); 63 object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals), 64 "board-rev"); 65 object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals), 66 "vcram-size"); 67 } 68 69 static void bcm2836_realize(DeviceState *dev, Error **errp) 70 { 71 BCM283XState *s = BCM283X(dev); 72 BCM283XClass *bc = BCM283X_GET_CLASS(dev); 73 const BCM283XInfo *info = bc->info; 74 Object *obj; 75 int n; 76 77 /* common peripherals from bcm2835 */ 78 79 obj = object_property_get_link(OBJECT(dev), "ram", &error_abort); 80 81 object_property_add_const_link(OBJECT(&s->peripherals), "ram", obj); 82 83 if (!sysbus_realize(SYS_BUS_DEVICE(&s->peripherals), errp)) { 84 return; 85 } 86 87 object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->peripherals), 88 "sd-bus"); 89 90 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0, 91 info->peri_base, 1); 92 93 /* bcm2836 interrupt controller (and mailboxes, etc.) */ 94 if (!sysbus_realize(SYS_BUS_DEVICE(&s->control), errp)) { 95 return; 96 } 97 98 sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, info->ctrl_base); 99 100 sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0, 101 qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-irq", 0)); 102 sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1, 103 qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-fiq", 0)); 104 105 for (n = 0; n < BCM283X_NCPUS; n++) { 106 /* TODO: this should be converted to a property of ARM_CPU */ 107 s->cpu[n].core.mp_affinity = (info->clusterid << 8) | n; 108 109 /* set periphbase/CBAR value for CPU-local registers */ 110 if (!object_property_set_int(OBJECT(&s->cpu[n].core), "reset-cbar", 111 info->peri_base, errp)) { 112 return; 113 } 114 115 /* start powered off if not enabled */ 116 if (!object_property_set_bool(OBJECT(&s->cpu[n].core), 117 "start-powered-off", 118 n >= s->enabled_cpus, 119 errp)) { 120 return; 121 } 122 123 if (!qdev_realize(DEVICE(&s->cpu[n].core), NULL, errp)) { 124 return; 125 } 126 127 /* Connect irq/fiq outputs from the interrupt controller. */ 128 qdev_connect_gpio_out_named(DEVICE(&s->control), "irq", n, 129 qdev_get_gpio_in(DEVICE(&s->cpu[n].core), ARM_CPU_IRQ)); 130 qdev_connect_gpio_out_named(DEVICE(&s->control), "fiq", n, 131 qdev_get_gpio_in(DEVICE(&s->cpu[n].core), ARM_CPU_FIQ)); 132 133 /* Connect timers from the CPU to the interrupt controller */ 134 qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_PHYS, 135 qdev_get_gpio_in_named(DEVICE(&s->control), "cntpnsirq", n)); 136 qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_VIRT, 137 qdev_get_gpio_in_named(DEVICE(&s->control), "cntvirq", n)); 138 qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_HYP, 139 qdev_get_gpio_in_named(DEVICE(&s->control), "cnthpirq", n)); 140 qdev_connect_gpio_out(DEVICE(&s->cpu[n].core), GTIMER_SEC, 141 qdev_get_gpio_in_named(DEVICE(&s->control), "cntpsirq", n)); 142 } 143 } 144 145 static Property bcm2836_props[] = { 146 DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus, 147 BCM283X_NCPUS), 148 DEFINE_PROP_END_OF_LIST() 149 }; 150 151 static void bcm283x_class_init(ObjectClass *oc, void *data) 152 { 153 DeviceClass *dc = DEVICE_CLASS(oc); 154 BCM283XClass *bc = BCM283X_CLASS(oc); 155 156 bc->info = data; 157 dc->realize = bcm2836_realize; 158 device_class_set_props(dc, bcm2836_props); 159 /* Reason: Must be wired up in code (see raspi_init() function) */ 160 dc->user_creatable = false; 161 } 162 163 static const TypeInfo bcm283x_type_info = { 164 .name = TYPE_BCM283X, 165 .parent = TYPE_DEVICE, 166 .instance_size = sizeof(BCM283XState), 167 .instance_init = bcm2836_init, 168 .class_size = sizeof(BCM283XClass), 169 .abstract = true, 170 }; 171 172 static void bcm2836_register_types(void) 173 { 174 int i; 175 176 type_register_static(&bcm283x_type_info); 177 for (i = 0; i < ARRAY_SIZE(bcm283x_socs); i++) { 178 TypeInfo ti = { 179 .name = bcm283x_socs[i].name, 180 .parent = TYPE_BCM283X, 181 .class_init = bcm283x_class_init, 182 .class_data = (void *) &bcm283x_socs[i], 183 }; 184 type_register(&ti); 185 } 186 } 187 188 type_init(bcm2836_register_types) 189