root / hw / cpu / a15mpcore.c @ f487b677
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1 | 5d782e08 | Peter Maydell | /*
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2 | 5d782e08 | Peter Maydell | * Cortex-A15MPCore internal peripheral emulation.
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3 | 5d782e08 | Peter Maydell | *
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4 | 5d782e08 | Peter Maydell | * Copyright (c) 2012 Linaro Limited.
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5 | 5d782e08 | Peter Maydell | * Written by Peter Maydell.
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6 | 5d782e08 | Peter Maydell | *
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7 | 5d782e08 | Peter Maydell | * This program is free software; you can redistribute it and/or modify
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8 | 5d782e08 | Peter Maydell | * it under the terms of the GNU General Public License as published by
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9 | 5d782e08 | Peter Maydell | * the Free Software Foundation; either version 2 of the License, or
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10 | 5d782e08 | Peter Maydell | * (at your option) any later version.
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11 | 5d782e08 | Peter Maydell | *
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12 | 5d782e08 | Peter Maydell | * This program is distributed in the hope that it will be useful,
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13 | 5d782e08 | Peter Maydell | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | 5d782e08 | Peter Maydell | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | 5d782e08 | Peter Maydell | * GNU General Public License for more details.
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16 | 5d782e08 | Peter Maydell | *
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17 | 5d782e08 | Peter Maydell | * You should have received a copy of the GNU General Public License along
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18 | 5d782e08 | Peter Maydell | * with this program; if not, see <http://www.gnu.org/licenses/>.
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19 | 5d782e08 | Peter Maydell | */
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20 | 5d782e08 | Peter Maydell | |
21 | 83c9f4ca | Paolo Bonzini | #include "hw/sysbus.h" |
22 | ed466761 | Peter Maydell | #include "sysemu/kvm.h" |
23 | 5d782e08 | Peter Maydell | |
24 | 5d782e08 | Peter Maydell | /* A15MP private memory region. */
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25 | 5d782e08 | Peter Maydell | |
26 | 5d782e08 | Peter Maydell | typedef struct A15MPPrivState { |
27 | 4637a027 | Peter Maydell | SysBusDevice busdev; |
28 | 5d782e08 | Peter Maydell | uint32_t num_cpu; |
29 | 5d782e08 | Peter Maydell | uint32_t num_irq; |
30 | 5d782e08 | Peter Maydell | MemoryRegion container; |
31 | 4637a027 | Peter Maydell | DeviceState *gic; |
32 | 5d782e08 | Peter Maydell | } A15MPPrivState; |
33 | 5d782e08 | Peter Maydell | |
34 | 4637a027 | Peter Maydell | static void a15mp_priv_set_irq(void *opaque, int irq, int level) |
35 | 4637a027 | Peter Maydell | { |
36 | 4637a027 | Peter Maydell | A15MPPrivState *s = (A15MPPrivState *)opaque; |
37 | 4637a027 | Peter Maydell | qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level); |
38 | 4637a027 | Peter Maydell | } |
39 | 4637a027 | Peter Maydell | |
40 | 5d782e08 | Peter Maydell | static int a15mp_priv_init(SysBusDevice *dev) |
41 | 5d782e08 | Peter Maydell | { |
42 | 4637a027 | Peter Maydell | A15MPPrivState *s = FROM_SYSBUS(A15MPPrivState, dev); |
43 | 4637a027 | Peter Maydell | SysBusDevice *busdev; |
44 | ed466761 | Peter Maydell | const char *gictype = "arm_gic"; |
45 | 4637a027 | Peter Maydell | |
46 | ed466761 | Peter Maydell | if (kvm_irqchip_in_kernel()) {
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47 | ed466761 | Peter Maydell | gictype = "kvm-arm-gic";
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48 | ed466761 | Peter Maydell | } |
49 | ed466761 | Peter Maydell | |
50 | ed466761 | Peter Maydell | s->gic = qdev_create(NULL, gictype);
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51 | 4637a027 | Peter Maydell | qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
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52 | 4637a027 | Peter Maydell | qdev_prop_set_uint32(s->gic, "num-irq", s->num_irq);
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53 | 306a571a | Peter Maydell | qdev_prop_set_uint32(s->gic, "revision", 2); |
54 | 4637a027 | Peter Maydell | qdev_init_nofail(s->gic); |
55 | 1356b98d | Andreas Färber | busdev = SYS_BUS_DEVICE(s->gic); |
56 | 4637a027 | Peter Maydell | |
57 | 4637a027 | Peter Maydell | /* Pass through outbound IRQ lines from the GIC */
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58 | 4637a027 | Peter Maydell | sysbus_pass_irq(dev, busdev); |
59 | 5d782e08 | Peter Maydell | |
60 | 4637a027 | Peter Maydell | /* Pass through inbound GPIO lines to the GIC */
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61 | 4637a027 | Peter Maydell | qdev_init_gpio_in(&s->busdev.qdev, a15mp_priv_set_irq, s->num_irq - 32);
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62 | 5d782e08 | Peter Maydell | |
63 | 5d782e08 | Peter Maydell | /* Memory map (addresses are offsets from PERIPHBASE):
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64 | 5d782e08 | Peter Maydell | * 0x0000-0x0fff -- reserved
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65 | 5d782e08 | Peter Maydell | * 0x1000-0x1fff -- GIC Distributor
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66 | 5d782e08 | Peter Maydell | * 0x2000-0x2fff -- GIC CPU interface
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67 | 5d782e08 | Peter Maydell | * 0x4000-0x4fff -- GIC virtual interface control (not modelled)
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68 | 5d782e08 | Peter Maydell | * 0x5000-0x5fff -- GIC virtual interface control (not modelled)
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69 | 5d782e08 | Peter Maydell | * 0x6000-0x7fff -- GIC virtual CPU interface (not modelled)
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70 | 5d782e08 | Peter Maydell | */
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71 | 5d782e08 | Peter Maydell | memory_region_init(&s->container, "a15mp-priv-container", 0x8000); |
72 | 4637a027 | Peter Maydell | memory_region_add_subregion(&s->container, 0x1000,
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73 | 4637a027 | Peter Maydell | sysbus_mmio_get_region(busdev, 0));
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74 | 4637a027 | Peter Maydell | memory_region_add_subregion(&s->container, 0x2000,
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75 | 4637a027 | Peter Maydell | sysbus_mmio_get_region(busdev, 1));
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76 | 5d782e08 | Peter Maydell | |
77 | 5d782e08 | Peter Maydell | sysbus_init_mmio(dev, &s->container); |
78 | 5d782e08 | Peter Maydell | return 0; |
79 | 5d782e08 | Peter Maydell | } |
80 | 5d782e08 | Peter Maydell | |
81 | 5d782e08 | Peter Maydell | static Property a15mp_priv_properties[] = {
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82 | 5d782e08 | Peter Maydell | DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1), |
83 | 5d782e08 | Peter Maydell | /* The Cortex-A15MP may have anything from 0 to 224 external interrupt
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84 | 5d782e08 | Peter Maydell | * IRQ lines (with another 32 internal). We default to 64+32, which
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85 | 5d782e08 | Peter Maydell | * is the number provided by the Cortex-A15MP test chip in the
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86 | 5d782e08 | Peter Maydell | * Versatile Express A15 development board.
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87 | 5d782e08 | Peter Maydell | * Other boards may differ and should set this property appropriately.
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88 | 5d782e08 | Peter Maydell | */
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89 | 5d782e08 | Peter Maydell | DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 96), |
90 | 5d782e08 | Peter Maydell | DEFINE_PROP_END_OF_LIST(), |
91 | 5d782e08 | Peter Maydell | }; |
92 | 5d782e08 | Peter Maydell | |
93 | 5d782e08 | Peter Maydell | static void a15mp_priv_class_init(ObjectClass *klass, void *data) |
94 | 5d782e08 | Peter Maydell | { |
95 | 5d782e08 | Peter Maydell | DeviceClass *dc = DEVICE_CLASS(klass); |
96 | 5d782e08 | Peter Maydell | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
97 | 5d782e08 | Peter Maydell | k->init = a15mp_priv_init; |
98 | 5d782e08 | Peter Maydell | dc->props = a15mp_priv_properties; |
99 | 4637a027 | Peter Maydell | /* We currently have no savable state */
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100 | 5d782e08 | Peter Maydell | } |
101 | 5d782e08 | Peter Maydell | |
102 | 8c43a6f0 | Andreas Färber | static const TypeInfo a15mp_priv_info = { |
103 | 5d782e08 | Peter Maydell | .name = "a15mpcore_priv",
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104 | 5d782e08 | Peter Maydell | .parent = TYPE_SYS_BUS_DEVICE, |
105 | 5d782e08 | Peter Maydell | .instance_size = sizeof(A15MPPrivState),
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106 | 5d782e08 | Peter Maydell | .class_init = a15mp_priv_class_init, |
107 | 5d782e08 | Peter Maydell | }; |
108 | 5d782e08 | Peter Maydell | |
109 | 5d782e08 | Peter Maydell | static void a15mp_register_types(void) |
110 | 5d782e08 | Peter Maydell | { |
111 | 5d782e08 | Peter Maydell | type_register_static(&a15mp_priv_info); |
112 | 5d782e08 | Peter Maydell | } |
113 | 5d782e08 | Peter Maydell | |
114 | 5d782e08 | Peter Maydell | type_init(a15mp_register_types) |