1 /* 2 * ASPEED SoC family 3 * 4 * Andrew Jeffery <andrew@aj.id.au> 5 * Jeremy Kerr <jk@ozlabs.org> 6 * 7 * Copyright 2016 IBM Corp. 8 * 9 * This code is licensed under the GPL version 2 or later. See 10 * the COPYING file in the top-level directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "qapi/error.h" 15 #include "hw/qdev-properties.h" 16 #include "hw/misc/unimp.h" 17 #include "hw/arm/aspeed_soc.h" 18 #include "hw/char/serial.h" 19 20 21 const char *aspeed_soc_cpu_type(AspeedSoCClass *sc) 22 { 23 assert(sc->valid_cpu_types); 24 assert(sc->valid_cpu_types[0]); 25 assert(!sc->valid_cpu_types[1]); 26 return sc->valid_cpu_types[0]; 27 } 28 29 qemu_irq aspeed_soc_get_irq(AspeedSoCState *s, int dev) 30 { 31 return ASPEED_SOC_GET_CLASS(s)->get_irq(s, dev); 32 } 33 34 bool aspeed_soc_uart_realize(AspeedSoCState *s, Error **errp) 35 { 36 AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); 37 SerialMM *smm; 38 39 for (int i = 0, uart = sc->uarts_base; i < sc->uarts_num; i++, uart++) { 40 smm = &s->uart[i]; 41 42 /* Chardev property is set by the machine. */ 43 qdev_prop_set_uint8(DEVICE(smm), "regshift", 2); 44 qdev_prop_set_uint32(DEVICE(smm), "baudbase", 38400); 45 qdev_set_legacy_instance_id(DEVICE(smm), sc->memmap[uart], 2); 46 qdev_prop_set_uint8(DEVICE(smm), "endianness", DEVICE_LITTLE_ENDIAN); 47 if (!sysbus_realize(SYS_BUS_DEVICE(smm), errp)) { 48 return false; 49 } 50 51 sysbus_connect_irq(SYS_BUS_DEVICE(smm), 0, aspeed_soc_get_irq(s, uart)); 52 aspeed_mmio_map(s, SYS_BUS_DEVICE(smm), 0, sc->memmap[uart]); 53 } 54 55 return true; 56 } 57 58 void aspeed_soc_uart_set_chr(AspeedSoCState *s, int dev, Chardev *chr) 59 { 60 AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); 61 int uart_first = aspeed_uart_first(sc); 62 int uart_index = aspeed_uart_index(dev); 63 int i = uart_index - uart_first; 64 65 g_assert(0 <= i && i < ARRAY_SIZE(s->uart) && i < sc->uarts_num); 66 qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr); 67 } 68 69 /* 70 * SDMC should be realized first to get correct RAM size and max size 71 * values 72 */ 73 bool aspeed_soc_dram_init(AspeedSoCState *s, Error **errp) 74 { 75 AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); 76 ram_addr_t ram_size, max_ram_size; 77 78 ram_size = object_property_get_uint(OBJECT(&s->sdmc), "ram-size", 79 &error_abort); 80 max_ram_size = object_property_get_uint(OBJECT(&s->sdmc), "max-ram-size", 81 &error_abort); 82 83 memory_region_init(&s->dram_container, OBJECT(s), "ram-container", 84 max_ram_size); 85 memory_region_add_subregion(&s->dram_container, 0, s->dram_mr); 86 87 /* 88 * Add a memory region beyond the RAM region to let firmwares scan 89 * the address space with load/store and guess how much RAM the 90 * SoC has. 91 */ 92 if (ram_size < max_ram_size) { 93 DeviceState *dev = qdev_new(TYPE_UNIMPLEMENTED_DEVICE); 94 95 qdev_prop_set_string(dev, "name", "ram-empty"); 96 qdev_prop_set_uint64(dev, "size", max_ram_size - ram_size); 97 if (!sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), errp)) { 98 return false; 99 } 100 101 memory_region_add_subregion_overlap(&s->dram_container, ram_size, 102 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0), -1000); 103 } 104 105 memory_region_add_subregion(s->memory, 106 sc->memmap[ASPEED_DEV_SDRAM], &s->dram_container); 107 return true; 108 } 109 110 void aspeed_mmio_map(AspeedSoCState *s, SysBusDevice *dev, int n, hwaddr addr) 111 { 112 memory_region_add_subregion(s->memory, addr, 113 sysbus_mmio_get_region(dev, n)); 114 } 115 116 void aspeed_mmio_map_unimplemented(AspeedSoCState *s, SysBusDevice *dev, 117 const char *name, hwaddr addr, uint64_t size) 118 { 119 qdev_prop_set_string(DEVICE(dev), "name", name); 120 qdev_prop_set_uint64(DEVICE(dev), "size", size); 121 sysbus_realize(dev, &error_abort); 122 123 memory_region_add_subregion_overlap(s->memory, addr, 124 sysbus_mmio_get_region(dev, 0), -1000); 125 } 126 127 static void aspeed_soc_realize(DeviceState *dev, Error **errp) 128 { 129 AspeedSoCState *s = ASPEED_SOC(dev); 130 131 if (!s->memory) { 132 error_setg(errp, "'memory' link is not set"); 133 return; 134 } 135 } 136 137 static Property aspeed_soc_properties[] = { 138 DEFINE_PROP_LINK("dram", AspeedSoCState, dram_mr, TYPE_MEMORY_REGION, 139 MemoryRegion *), 140 DEFINE_PROP_LINK("memory", AspeedSoCState, memory, TYPE_MEMORY_REGION, 141 MemoryRegion *), 142 DEFINE_PROP_END_OF_LIST(), 143 }; 144 145 static void aspeed_soc_class_init(ObjectClass *oc, void *data) 146 { 147 DeviceClass *dc = DEVICE_CLASS(oc); 148 149 dc->realize = aspeed_soc_realize; 150 device_class_set_props(dc, aspeed_soc_properties); 151 } 152 153 static const TypeInfo aspeed_soc_types[] = { 154 { 155 .name = TYPE_ASPEED_SOC, 156 .parent = TYPE_DEVICE, 157 .instance_size = sizeof(AspeedSoCState), 158 .class_size = sizeof(AspeedSoCClass), 159 .class_init = aspeed_soc_class_init, 160 .abstract = true, 161 }, 162 }; 163 164 DEFINE_TYPES(aspeed_soc_types) 165