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 = ASPEED_DEV_UART1; 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 i = dev - ASPEED_DEV_UART1; 62 63 g_assert(0 <= i && i < ARRAY_SIZE(s->uart) && i < sc->uarts_num); 64 qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr); 65 } 66 67 /* 68 * SDMC should be realized first to get correct RAM size and max size 69 * values 70 */ 71 bool aspeed_soc_dram_init(AspeedSoCState *s, Error **errp) 72 { 73 AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); 74 ram_addr_t ram_size, max_ram_size; 75 76 ram_size = object_property_get_uint(OBJECT(&s->sdmc), "ram-size", 77 &error_abort); 78 max_ram_size = object_property_get_uint(OBJECT(&s->sdmc), "max-ram-size", 79 &error_abort); 80 81 memory_region_init(&s->dram_container, OBJECT(s), "ram-container", 82 max_ram_size); 83 memory_region_add_subregion(&s->dram_container, 0, s->dram_mr); 84 85 /* 86 * Add a memory region beyond the RAM region to let firmwares scan 87 * the address space with load/store and guess how much RAM the 88 * SoC has. 89 */ 90 if (ram_size < max_ram_size) { 91 DeviceState *dev = qdev_new(TYPE_UNIMPLEMENTED_DEVICE); 92 93 qdev_prop_set_string(dev, "name", "ram-empty"); 94 qdev_prop_set_uint64(dev, "size", max_ram_size - ram_size); 95 if (!sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), errp)) { 96 return false; 97 } 98 99 memory_region_add_subregion_overlap(&s->dram_container, ram_size, 100 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0), -1000); 101 } 102 103 memory_region_add_subregion(s->memory, 104 sc->memmap[ASPEED_DEV_SDRAM], &s->dram_container); 105 return true; 106 } 107 108 void aspeed_mmio_map(AspeedSoCState *s, SysBusDevice *dev, int n, hwaddr addr) 109 { 110 memory_region_add_subregion(s->memory, addr, 111 sysbus_mmio_get_region(dev, n)); 112 } 113 114 void aspeed_mmio_map_unimplemented(AspeedSoCState *s, SysBusDevice *dev, 115 const char *name, hwaddr addr, uint64_t size) 116 { 117 qdev_prop_set_string(DEVICE(dev), "name", name); 118 qdev_prop_set_uint64(DEVICE(dev), "size", size); 119 sysbus_realize(dev, &error_abort); 120 121 memory_region_add_subregion_overlap(s->memory, addr, 122 sysbus_mmio_get_region(dev, 0), -1000); 123 } 124 125 static void aspeed_soc_realize(DeviceState *dev, Error **errp) 126 { 127 AspeedSoCState *s = ASPEED_SOC(dev); 128 129 if (!s->memory) { 130 error_setg(errp, "'memory' link is not set"); 131 return; 132 } 133 } 134 135 static Property aspeed_soc_properties[] = { 136 DEFINE_PROP_LINK("dram", AspeedSoCState, dram_mr, TYPE_MEMORY_REGION, 137 MemoryRegion *), 138 DEFINE_PROP_LINK("memory", AspeedSoCState, memory, TYPE_MEMORY_REGION, 139 MemoryRegion *), 140 DEFINE_PROP_END_OF_LIST(), 141 }; 142 143 static void aspeed_soc_class_init(ObjectClass *oc, void *data) 144 { 145 DeviceClass *dc = DEVICE_CLASS(oc); 146 147 dc->realize = aspeed_soc_realize; 148 device_class_set_props(dc, aspeed_soc_properties); 149 } 150 151 static const TypeInfo aspeed_soc_types[] = { 152 { 153 .name = TYPE_ASPEED_SOC, 154 .parent = TYPE_DEVICE, 155 .instance_size = sizeof(AspeedSoCState), 156 .class_size = sizeof(AspeedSoCClass), 157 .class_init = aspeed_soc_class_init, 158 .abstract = true, 159 }, 160 }; 161 162 DEFINE_TYPES(aspeed_soc_types) 163