virt.c (34120B)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * QEMU loongson 3a5000 develop board emulation 4 * 5 * Copyright (c) 2021 Loongson Technology Corporation Limited 6 */ 7 #include "qemu/osdep.h" 8 #include "qemu/units.h" 9 #include "qemu/datadir.h" 10 #include "qapi/error.h" 11 #include "hw/boards.h" 12 #include "hw/char/serial.h" 13 #include "sysemu/sysemu.h" 14 #include "sysemu/qtest.h" 15 #include "sysemu/runstate.h" 16 #include "sysemu/reset.h" 17 #include "sysemu/rtc.h" 18 #include "hw/loongarch/virt.h" 19 #include "exec/address-spaces.h" 20 #include "hw/irq.h" 21 #include "net/net.h" 22 #include "hw/loader.h" 23 #include "elf.h" 24 #include "hw/intc/loongarch_ipi.h" 25 #include "hw/intc/loongarch_extioi.h" 26 #include "hw/intc/loongarch_pch_pic.h" 27 #include "hw/intc/loongarch_pch_msi.h" 28 #include "hw/pci-host/ls7a.h" 29 #include "hw/pci-host/gpex.h" 30 #include "hw/misc/unimp.h" 31 #include "hw/loongarch/fw_cfg.h" 32 #include "target/loongarch/cpu.h" 33 #include "hw/firmware/smbios.h" 34 #include "hw/acpi/aml-build.h" 35 #include "qapi/qapi-visit-common.h" 36 #include "hw/acpi/generic_event_device.h" 37 #include "hw/mem/nvdimm.h" 38 #include "sysemu/device_tree.h" 39 #include <libfdt.h> 40 #include "hw/core/sysbus-fdt.h" 41 #include "hw/platform-bus.h" 42 #include "hw/display/ramfb.h" 43 #include "hw/mem/pc-dimm.h" 44 #include "sysemu/tpm.h" 45 46 static void fdt_add_rtc_node(LoongArchMachineState *lams) 47 { 48 char *nodename; 49 hwaddr base = VIRT_RTC_REG_BASE; 50 hwaddr size = VIRT_RTC_LEN; 51 MachineState *ms = MACHINE(lams); 52 53 nodename = g_strdup_printf("/rtc@%" PRIx64, base); 54 qemu_fdt_add_subnode(ms->fdt, nodename); 55 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongson,ls7a-rtc"); 56 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size); 57 g_free(nodename); 58 } 59 60 static void fdt_add_uart_node(LoongArchMachineState *lams) 61 { 62 char *nodename; 63 hwaddr base = VIRT_UART_BASE; 64 hwaddr size = VIRT_UART_SIZE; 65 MachineState *ms = MACHINE(lams); 66 67 nodename = g_strdup_printf("/serial@%" PRIx64, base); 68 qemu_fdt_add_subnode(ms->fdt, nodename); 69 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "ns16550a"); 70 qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0, base, 0x0, size); 71 qemu_fdt_setprop_cell(ms->fdt, nodename, "clock-frequency", 100000000); 72 qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename); 73 g_free(nodename); 74 } 75 76 static void create_fdt(LoongArchMachineState *lams) 77 { 78 MachineState *ms = MACHINE(lams); 79 80 ms->fdt = create_device_tree(&lams->fdt_size); 81 if (!ms->fdt) { 82 error_report("create_device_tree() failed"); 83 exit(1); 84 } 85 86 /* Header */ 87 qemu_fdt_setprop_string(ms->fdt, "/", "compatible", 88 "linux,dummy-loongson3"); 89 qemu_fdt_setprop_cell(ms->fdt, "/", "#address-cells", 0x2); 90 qemu_fdt_setprop_cell(ms->fdt, "/", "#size-cells", 0x2); 91 qemu_fdt_add_subnode(ms->fdt, "/chosen"); 92 } 93 94 static void fdt_add_cpu_nodes(const LoongArchMachineState *lams) 95 { 96 int num; 97 const MachineState *ms = MACHINE(lams); 98 int smp_cpus = ms->smp.cpus; 99 100 qemu_fdt_add_subnode(ms->fdt, "/cpus"); 101 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", 0x1); 102 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0); 103 104 /* cpu nodes */ 105 for (num = smp_cpus - 1; num >= 0; num--) { 106 char *nodename = g_strdup_printf("/cpus/cpu@%d", num); 107 LoongArchCPU *cpu = LOONGARCH_CPU(qemu_get_cpu(num)); 108 109 qemu_fdt_add_subnode(ms->fdt, nodename); 110 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu"); 111 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", 112 cpu->dtb_compatible); 113 qemu_fdt_setprop_cell(ms->fdt, nodename, "reg", num); 114 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", 115 qemu_fdt_alloc_phandle(ms->fdt)); 116 g_free(nodename); 117 } 118 119 /*cpu map */ 120 qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map"); 121 122 for (num = smp_cpus - 1; num >= 0; num--) { 123 char *cpu_path = g_strdup_printf("/cpus/cpu@%d", num); 124 char *map_path; 125 126 if (ms->smp.threads > 1) { 127 map_path = g_strdup_printf( 128 "/cpus/cpu-map/socket%d/core%d/thread%d", 129 num / (ms->smp.cores * ms->smp.threads), 130 (num / ms->smp.threads) % ms->smp.cores, 131 num % ms->smp.threads); 132 } else { 133 map_path = g_strdup_printf( 134 "/cpus/cpu-map/socket%d/core%d", 135 num / ms->smp.cores, 136 num % ms->smp.cores); 137 } 138 qemu_fdt_add_path(ms->fdt, map_path); 139 qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path); 140 141 g_free(map_path); 142 g_free(cpu_path); 143 } 144 } 145 146 static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams) 147 { 148 char *nodename; 149 hwaddr base = VIRT_FWCFG_BASE; 150 const MachineState *ms = MACHINE(lams); 151 152 nodename = g_strdup_printf("/fw_cfg@%" PRIx64, base); 153 qemu_fdt_add_subnode(ms->fdt, nodename); 154 qemu_fdt_setprop_string(ms->fdt, nodename, 155 "compatible", "qemu,fw-cfg-mmio"); 156 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 157 2, base, 2, 0x18); 158 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); 159 g_free(nodename); 160 } 161 162 static void fdt_add_pcie_node(const LoongArchMachineState *lams) 163 { 164 char *nodename; 165 hwaddr base_mmio = VIRT_PCI_MEM_BASE; 166 hwaddr size_mmio = VIRT_PCI_MEM_SIZE; 167 hwaddr base_pio = VIRT_PCI_IO_BASE; 168 hwaddr size_pio = VIRT_PCI_IO_SIZE; 169 hwaddr base_pcie = VIRT_PCI_CFG_BASE; 170 hwaddr size_pcie = VIRT_PCI_CFG_SIZE; 171 hwaddr base = base_pcie; 172 173 const MachineState *ms = MACHINE(lams); 174 175 nodename = g_strdup_printf("/pcie@%" PRIx64, base); 176 qemu_fdt_add_subnode(ms->fdt, nodename); 177 qemu_fdt_setprop_string(ms->fdt, nodename, 178 "compatible", "pci-host-ecam-generic"); 179 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci"); 180 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3); 181 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2); 182 qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0); 183 qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0, 184 PCIE_MMCFG_BUS(VIRT_PCI_CFG_SIZE - 1)); 185 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); 186 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 187 2, base_pcie, 2, size_pcie); 188 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges", 189 1, FDT_PCI_RANGE_IOPORT, 2, VIRT_PCI_IO_OFFSET, 190 2, base_pio, 2, size_pio, 191 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, 192 2, base_mmio, 2, size_mmio); 193 g_free(nodename); 194 } 195 196 static void fdt_add_irqchip_node(LoongArchMachineState *lams) 197 { 198 MachineState *ms = MACHINE(lams); 199 char *nodename; 200 uint32_t irqchip_phandle; 201 202 irqchip_phandle = qemu_fdt_alloc_phandle(ms->fdt); 203 qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", irqchip_phandle); 204 205 nodename = g_strdup_printf("/intc@%lx", VIRT_IOAPIC_REG_BASE); 206 qemu_fdt_add_subnode(ms->fdt, nodename); 207 qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3); 208 qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0); 209 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2); 210 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2); 211 qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0); 212 213 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", 214 "loongarch,ls7a"); 215 216 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 217 2, VIRT_IOAPIC_REG_BASE, 218 2, PCH_PIC_ROUTE_ENTRY_OFFSET); 219 220 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", irqchip_phandle); 221 g_free(nodename); 222 } 223 224 #define PM_BASE 0x10080000 225 #define PM_SIZE 0x100 226 #define PM_CTRL 0x10 227 228 static void virt_build_smbios(LoongArchMachineState *lams) 229 { 230 MachineState *ms = MACHINE(lams); 231 MachineClass *mc = MACHINE_GET_CLASS(lams); 232 uint8_t *smbios_tables, *smbios_anchor; 233 size_t smbios_tables_len, smbios_anchor_len; 234 const char *product = "QEMU Virtual Machine"; 235 236 if (!lams->fw_cfg) { 237 return; 238 } 239 240 smbios_set_defaults("QEMU", product, mc->name, false, 241 true, SMBIOS_ENTRY_POINT_TYPE_64); 242 243 smbios_get_tables(ms, NULL, 0, &smbios_tables, &smbios_tables_len, 244 &smbios_anchor, &smbios_anchor_len, &error_fatal); 245 246 if (smbios_anchor) { 247 fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-tables", 248 smbios_tables, smbios_tables_len); 249 fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-anchor", 250 smbios_anchor, smbios_anchor_len); 251 } 252 } 253 254 static void virt_machine_done(Notifier *notifier, void *data) 255 { 256 LoongArchMachineState *lams = container_of(notifier, 257 LoongArchMachineState, machine_done); 258 virt_build_smbios(lams); 259 loongarch_acpi_setup(lams); 260 } 261 262 struct memmap_entry { 263 uint64_t address; 264 uint64_t length; 265 uint32_t type; 266 uint32_t reserved; 267 }; 268 269 static struct memmap_entry *memmap_table; 270 static unsigned memmap_entries; 271 272 static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type) 273 { 274 /* Ensure there are no duplicate entries. */ 275 for (unsigned i = 0; i < memmap_entries; i++) { 276 assert(memmap_table[i].address != address); 277 } 278 279 memmap_table = g_renew(struct memmap_entry, memmap_table, 280 memmap_entries + 1); 281 memmap_table[memmap_entries].address = cpu_to_le64(address); 282 memmap_table[memmap_entries].length = cpu_to_le64(length); 283 memmap_table[memmap_entries].type = cpu_to_le32(type); 284 memmap_table[memmap_entries].reserved = 0; 285 memmap_entries++; 286 } 287 288 /* 289 * This is a placeholder for missing ACPI, 290 * and will eventually be replaced. 291 */ 292 static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size) 293 { 294 return 0; 295 } 296 297 static void loongarch_virt_pm_write(void *opaque, hwaddr addr, 298 uint64_t val, unsigned size) 299 { 300 if (addr != PM_CTRL) { 301 return; 302 } 303 304 switch (val) { 305 case 0x00: 306 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 307 return; 308 case 0xff: 309 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 310 return; 311 default: 312 return; 313 } 314 } 315 316 static const MemoryRegionOps loongarch_virt_pm_ops = { 317 .read = loongarch_virt_pm_read, 318 .write = loongarch_virt_pm_write, 319 .endianness = DEVICE_NATIVE_ENDIAN, 320 .valid = { 321 .min_access_size = 1, 322 .max_access_size = 1 323 } 324 }; 325 326 static struct _loaderparams { 327 uint64_t ram_size; 328 const char *kernel_filename; 329 const char *kernel_cmdline; 330 const char *initrd_filename; 331 } loaderparams; 332 333 static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) 334 { 335 return addr & 0x1fffffffll; 336 } 337 338 static int64_t load_kernel_info(void) 339 { 340 uint64_t kernel_entry, kernel_low, kernel_high; 341 ssize_t kernel_size; 342 343 kernel_size = load_elf(loaderparams.kernel_filename, NULL, 344 cpu_loongarch_virt_to_phys, NULL, 345 &kernel_entry, &kernel_low, 346 &kernel_high, NULL, 0, 347 EM_LOONGARCH, 1, 0); 348 349 if (kernel_size < 0) { 350 error_report("could not load kernel '%s': %s", 351 loaderparams.kernel_filename, 352 load_elf_strerror(kernel_size)); 353 exit(1); 354 } 355 return kernel_entry; 356 } 357 358 static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState *lams) 359 { 360 DeviceState *dev; 361 MachineState *ms = MACHINE(lams); 362 uint32_t event = ACPI_GED_PWR_DOWN_EVT; 363 364 if (ms->ram_slots) { 365 event |= ACPI_GED_MEM_HOTPLUG_EVT; 366 } 367 dev = qdev_new(TYPE_ACPI_GED); 368 qdev_prop_set_uint32(dev, "ged-event", event); 369 370 /* ged event */ 371 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, VIRT_GED_EVT_ADDR); 372 /* memory hotplug */ 373 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, VIRT_GED_MEM_ADDR); 374 /* ged regs used for reset and power down */ 375 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR); 376 377 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 378 qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - PCH_PIC_IRQ_OFFSET)); 379 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 380 return dev; 381 } 382 383 static DeviceState *create_platform_bus(DeviceState *pch_pic) 384 { 385 DeviceState *dev; 386 SysBusDevice *sysbus; 387 int i, irq; 388 MemoryRegion *sysmem = get_system_memory(); 389 390 dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE); 391 dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE); 392 qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS); 393 qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE); 394 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 395 396 sysbus = SYS_BUS_DEVICE(dev); 397 for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) { 398 irq = VIRT_PLATFORM_BUS_IRQ - PCH_PIC_IRQ_OFFSET + i; 399 sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq)); 400 } 401 402 memory_region_add_subregion(sysmem, 403 VIRT_PLATFORM_BUS_BASEADDRESS, 404 sysbus_mmio_get_region(sysbus, 0)); 405 return dev; 406 } 407 408 static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams) 409 { 410 DeviceState *gpex_dev; 411 SysBusDevice *d; 412 PCIBus *pci_bus; 413 MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg; 414 MemoryRegion *mmio_alias, *mmio_reg, *pm_mem; 415 int i; 416 417 gpex_dev = qdev_new(TYPE_GPEX_HOST); 418 d = SYS_BUS_DEVICE(gpex_dev); 419 sysbus_realize_and_unref(d, &error_fatal); 420 pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus; 421 lams->pci_bus = pci_bus; 422 423 /* Map only part size_ecam bytes of ECAM space */ 424 ecam_alias = g_new0(MemoryRegion, 1); 425 ecam_reg = sysbus_mmio_get_region(d, 0); 426 memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam", 427 ecam_reg, 0, VIRT_PCI_CFG_SIZE); 428 memory_region_add_subregion(get_system_memory(), VIRT_PCI_CFG_BASE, 429 ecam_alias); 430 431 /* Map PCI mem space */ 432 mmio_alias = g_new0(MemoryRegion, 1); 433 mmio_reg = sysbus_mmio_get_region(d, 1); 434 memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio", 435 mmio_reg, VIRT_PCI_MEM_BASE, VIRT_PCI_MEM_SIZE); 436 memory_region_add_subregion(get_system_memory(), VIRT_PCI_MEM_BASE, 437 mmio_alias); 438 439 /* Map PCI IO port space. */ 440 pio_alias = g_new0(MemoryRegion, 1); 441 pio_reg = sysbus_mmio_get_region(d, 2); 442 memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg, 443 VIRT_PCI_IO_OFFSET, VIRT_PCI_IO_SIZE); 444 memory_region_add_subregion(get_system_memory(), VIRT_PCI_IO_BASE, 445 pio_alias); 446 447 for (i = 0; i < GPEX_NUM_IRQS; i++) { 448 sysbus_connect_irq(d, i, 449 qdev_get_gpio_in(pch_pic, 16 + i)); 450 gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i); 451 } 452 453 serial_mm_init(get_system_memory(), VIRT_UART_BASE, 0, 454 qdev_get_gpio_in(pch_pic, 455 VIRT_UART_IRQ - PCH_PIC_IRQ_OFFSET), 456 115200, serial_hd(0), DEVICE_LITTLE_ENDIAN); 457 fdt_add_uart_node(lams); 458 459 /* Network init */ 460 for (i = 0; i < nb_nics; i++) { 461 NICInfo *nd = &nd_table[i]; 462 463 if (!nd->model) { 464 nd->model = g_strdup("virtio"); 465 } 466 467 pci_nic_init_nofail(nd, pci_bus, nd->model, NULL); 468 } 469 470 /* 471 * There are some invalid guest memory access. 472 * Create some unimplemented devices to emulate this. 473 */ 474 create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4); 475 sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE, 476 qdev_get_gpio_in(pch_pic, 477 VIRT_RTC_IRQ - PCH_PIC_IRQ_OFFSET)); 478 fdt_add_rtc_node(lams); 479 480 pm_mem = g_new(MemoryRegion, 1); 481 memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops, 482 NULL, "loongarch_virt_pm", PM_SIZE); 483 memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); 484 /* acpi ged */ 485 lams->acpi_ged = create_acpi_ged(pch_pic, lams); 486 /* platform bus */ 487 lams->platform_bus_dev = create_platform_bus(pch_pic); 488 } 489 490 static void loongarch_irq_init(LoongArchMachineState *lams) 491 { 492 MachineState *ms = MACHINE(lams); 493 DeviceState *pch_pic, *pch_msi, *cpudev; 494 DeviceState *ipi, *extioi; 495 SysBusDevice *d; 496 LoongArchCPU *lacpu; 497 CPULoongArchState *env; 498 CPUState *cpu_state; 499 int cpu, pin, i; 500 501 ipi = qdev_new(TYPE_LOONGARCH_IPI); 502 sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); 503 504 extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); 505 sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); 506 507 /* 508 * The connection of interrupts: 509 * +-----+ +---------+ +-------+ 510 * | IPI |--> | CPUINTC | <-- | Timer | 511 * +-----+ +---------+ +-------+ 512 * ^ 513 * | 514 * +---------+ 515 * | EIOINTC | 516 * +---------+ 517 * ^ ^ 518 * | | 519 * +---------+ +---------+ 520 * | PCH-PIC | | PCH-MSI | 521 * +---------+ +---------+ 522 * ^ ^ ^ 523 * | | | 524 * +--------+ +---------+ +---------+ 525 * | UARTs | | Devices | | Devices | 526 * +--------+ +---------+ +---------+ 527 */ 528 for (cpu = 0; cpu < ms->smp.cpus; cpu++) { 529 cpu_state = qemu_get_cpu(cpu); 530 cpudev = DEVICE(cpu_state); 531 lacpu = LOONGARCH_CPU(cpu_state); 532 env = &(lacpu->env); 533 534 /* connect ipi irq to cpu irq */ 535 qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); 536 /* IPI iocsr memory region */ 537 memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX, 538 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 539 cpu * 2)); 540 memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR, 541 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 542 cpu * 2 + 1)); 543 /* extioi iocsr memory region */ 544 memory_region_add_subregion(&env->system_iocsr, APIC_BASE, 545 sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 546 cpu)); 547 } 548 549 /* 550 * connect ext irq to the cpu irq 551 * cpu_pin[9:2] <= intc_pin[7:0] 552 */ 553 for (cpu = 0; cpu < ms->smp.cpus; cpu++) { 554 cpudev = DEVICE(qemu_get_cpu(cpu)); 555 for (pin = 0; pin < LS3A_INTC_IP; pin++) { 556 qdev_connect_gpio_out(extioi, (cpu * 8 + pin), 557 qdev_get_gpio_in(cpudev, pin + 2)); 558 } 559 } 560 561 pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); 562 d = SYS_BUS_DEVICE(pch_pic); 563 sysbus_realize_and_unref(d, &error_fatal); 564 memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE, 565 sysbus_mmio_get_region(d, 0)); 566 memory_region_add_subregion(get_system_memory(), 567 VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET, 568 sysbus_mmio_get_region(d, 1)); 569 memory_region_add_subregion(get_system_memory(), 570 VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO, 571 sysbus_mmio_get_region(d, 2)); 572 573 /* Connect 64 pch_pic irqs to extioi */ 574 for (int i = 0; i < PCH_PIC_IRQ_NUM; i++) { 575 qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); 576 } 577 578 pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); 579 qdev_prop_set_uint32(pch_msi, "msi_irq_base", PCH_MSI_IRQ_START); 580 d = SYS_BUS_DEVICE(pch_msi); 581 sysbus_realize_and_unref(d, &error_fatal); 582 sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); 583 for (i = 0; i < PCH_MSI_IRQ_NUM; i++) { 584 /* Connect 192 pch_msi irqs to extioi */ 585 qdev_connect_gpio_out(DEVICE(d), i, 586 qdev_get_gpio_in(extioi, i + PCH_MSI_IRQ_START)); 587 } 588 589 loongarch_devices_init(pch_pic, lams); 590 } 591 592 static void loongarch_firmware_init(LoongArchMachineState *lams) 593 { 594 char *filename = MACHINE(lams)->firmware; 595 char *bios_name = NULL; 596 int bios_size; 597 598 lams->bios_loaded = false; 599 if (filename) { 600 bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 601 if (!bios_name) { 602 error_report("Could not find ROM image '%s'", filename); 603 exit(1); 604 } 605 606 bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE); 607 if (bios_size < 0) { 608 error_report("Could not load ROM image '%s'", bios_name); 609 exit(1); 610 } 611 612 g_free(bios_name); 613 614 memory_region_init_ram(&lams->bios, NULL, "loongarch.bios", 615 VIRT_BIOS_SIZE, &error_fatal); 616 memory_region_set_readonly(&lams->bios, true); 617 memory_region_add_subregion(get_system_memory(), VIRT_BIOS_BASE, &lams->bios); 618 lams->bios_loaded = true; 619 } 620 621 } 622 623 static void reset_load_elf(void *opaque) 624 { 625 LoongArchCPU *cpu = opaque; 626 CPULoongArchState *env = &cpu->env; 627 628 cpu_reset(CPU(cpu)); 629 if (env->load_elf) { 630 cpu_set_pc(CPU(cpu), env->elf_address); 631 } 632 } 633 634 static void fw_cfg_add_kernel_info(FWCfgState *fw_cfg) 635 { 636 /* 637 * Expose the kernel, the command line, and the initrd in fw_cfg. 638 * We don't process them here at all, it's all left to the 639 * firmware. 640 */ 641 load_image_to_fw_cfg(fw_cfg, 642 FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA, 643 loaderparams.kernel_filename, 644 false); 645 646 if (loaderparams.initrd_filename) { 647 load_image_to_fw_cfg(fw_cfg, 648 FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA, 649 loaderparams.initrd_filename, false); 650 } 651 652 if (loaderparams.kernel_cmdline) { 653 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, 654 strlen(loaderparams.kernel_cmdline) + 1); 655 fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, 656 loaderparams.kernel_cmdline); 657 } 658 } 659 660 static void loongarch_firmware_boot(LoongArchMachineState *lams) 661 { 662 fw_cfg_add_kernel_info(lams->fw_cfg); 663 } 664 665 static void loongarch_direct_kernel_boot(LoongArchMachineState *lams) 666 { 667 MachineState *machine = MACHINE(lams); 668 int64_t kernel_addr = 0; 669 LoongArchCPU *lacpu; 670 int i; 671 672 kernel_addr = load_kernel_info(); 673 if (!machine->firmware) { 674 for (i = 0; i < machine->smp.cpus; i++) { 675 lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); 676 lacpu->env.load_elf = true; 677 lacpu->env.elf_address = kernel_addr; 678 } 679 } 680 } 681 682 static void loongarch_init(MachineState *machine) 683 { 684 LoongArchCPU *lacpu; 685 const char *cpu_model = machine->cpu_type; 686 ram_addr_t offset = 0; 687 ram_addr_t ram_size = machine->ram_size; 688 uint64_t highram_size = 0; 689 MemoryRegion *address_space_mem = get_system_memory(); 690 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 691 int i; 692 hwaddr fdt_base; 693 694 if (!cpu_model) { 695 cpu_model = LOONGARCH_CPU_TYPE_NAME("la464"); 696 } 697 698 if (!strstr(cpu_model, "la464")) { 699 error_report("LoongArch/TCG needs cpu type la464"); 700 exit(1); 701 } 702 703 if (ram_size < 1 * GiB) { 704 error_report("ram_size must be greater than 1G."); 705 exit(1); 706 } 707 create_fdt(lams); 708 /* Init CPUs */ 709 for (i = 0; i < machine->smp.cpus; i++) { 710 cpu_create(machine->cpu_type); 711 } 712 fdt_add_cpu_nodes(lams); 713 /* Add memory region */ 714 memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram", 715 machine->ram, 0, 256 * MiB); 716 memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); 717 offset += 256 * MiB; 718 memmap_add_entry(0, 256 * MiB, 1); 719 highram_size = ram_size - 256 * MiB; 720 memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", 721 machine->ram, offset, highram_size); 722 memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); 723 memmap_add_entry(0x90000000, highram_size, 1); 724 725 /* initialize device memory address space */ 726 if (machine->ram_size < machine->maxram_size) { 727 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 728 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 729 730 if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { 731 error_report("unsupported amount of memory slots: %"PRIu64, 732 machine->ram_slots); 733 exit(EXIT_FAILURE); 734 } 735 736 if (QEMU_ALIGN_UP(machine->maxram_size, 737 TARGET_PAGE_SIZE) != machine->maxram_size) { 738 error_report("maximum memory size must by aligned to multiple of " 739 "%d bytes", TARGET_PAGE_SIZE); 740 exit(EXIT_FAILURE); 741 } 742 /* device memory base is the top of high memory address. */ 743 machine->device_memory->base = 0x90000000 + highram_size; 744 machine->device_memory->base = 745 ROUND_UP(machine->device_memory->base, 1 * GiB); 746 747 memory_region_init(&machine->device_memory->mr, OBJECT(lams), 748 "device-memory", device_mem_size); 749 memory_region_add_subregion(address_space_mem, machine->device_memory->base, 750 &machine->device_memory->mr); 751 } 752 753 /* Add isa io region */ 754 memory_region_init_alias(&lams->isa_io, NULL, "isa-io", 755 get_system_io(), 0, VIRT_ISA_IO_SIZE); 756 memory_region_add_subregion(address_space_mem, VIRT_ISA_IO_BASE, 757 &lams->isa_io); 758 /* load the BIOS image. */ 759 loongarch_firmware_init(lams); 760 761 /* fw_cfg init */ 762 lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine); 763 rom_set_fw(lams->fw_cfg); 764 if (lams->fw_cfg != NULL) { 765 fw_cfg_add_file(lams->fw_cfg, "etc/memmap", 766 memmap_table, 767 sizeof(struct memmap_entry) * (memmap_entries)); 768 } 769 fdt_add_fw_cfg_node(lams); 770 loaderparams.ram_size = ram_size; 771 loaderparams.kernel_filename = machine->kernel_filename; 772 loaderparams.kernel_cmdline = machine->kernel_cmdline; 773 loaderparams.initrd_filename = machine->initrd_filename; 774 /* load the kernel. */ 775 if (loaderparams.kernel_filename) { 776 if (lams->bios_loaded) { 777 loongarch_firmware_boot(lams); 778 } else { 779 loongarch_direct_kernel_boot(lams); 780 } 781 } 782 /* register reset function */ 783 for (i = 0; i < machine->smp.cpus; i++) { 784 lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); 785 qemu_register_reset(reset_load_elf, lacpu); 786 } 787 /* Initialize the IO interrupt subsystem */ 788 loongarch_irq_init(lams); 789 fdt_add_irqchip_node(lams); 790 platform_bus_add_all_fdt_nodes(machine->fdt, "/intc", 791 VIRT_PLATFORM_BUS_BASEADDRESS, 792 VIRT_PLATFORM_BUS_SIZE, 793 VIRT_PLATFORM_BUS_IRQ); 794 lams->machine_done.notify = virt_machine_done; 795 qemu_add_machine_init_done_notifier(&lams->machine_done); 796 fdt_add_pcie_node(lams); 797 /* 798 * Since lowmem region starts from 0 and Linux kernel legacy start address 799 * at 2 MiB, FDT base address is located at 1 MiB to avoid NULL pointer 800 * access. FDT size limit with 1 MiB. 801 * Put the FDT into the memory map as a ROM image: this will ensure 802 * the FDT is copied again upon reset, even if addr points into RAM. 803 */ 804 fdt_base = 1 * MiB; 805 qemu_fdt_dumpdtb(machine->fdt, lams->fdt_size); 806 rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, fdt_base); 807 } 808 809 bool loongarch_is_acpi_enabled(LoongArchMachineState *lams) 810 { 811 if (lams->acpi == ON_OFF_AUTO_OFF) { 812 return false; 813 } 814 return true; 815 } 816 817 static void loongarch_get_acpi(Object *obj, Visitor *v, const char *name, 818 void *opaque, Error **errp) 819 { 820 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 821 OnOffAuto acpi = lams->acpi; 822 823 visit_type_OnOffAuto(v, name, &acpi, errp); 824 } 825 826 static void loongarch_set_acpi(Object *obj, Visitor *v, const char *name, 827 void *opaque, Error **errp) 828 { 829 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 830 831 visit_type_OnOffAuto(v, name, &lams->acpi, errp); 832 } 833 834 static void loongarch_machine_initfn(Object *obj) 835 { 836 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 837 838 lams->acpi = ON_OFF_AUTO_AUTO; 839 lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); 840 lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); 841 } 842 843 static bool memhp_type_supported(DeviceState *dev) 844 { 845 /* we only support pc dimm now */ 846 return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) && 847 !object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 848 } 849 850 static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 851 Error **errp) 852 { 853 pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); 854 } 855 856 static void virt_machine_device_pre_plug(HotplugHandler *hotplug_dev, 857 DeviceState *dev, Error **errp) 858 { 859 if (memhp_type_supported(dev)) { 860 virt_mem_pre_plug(hotplug_dev, dev, errp); 861 } 862 } 863 864 static void virt_mem_unplug_request(HotplugHandler *hotplug_dev, 865 DeviceState *dev, Error **errp) 866 { 867 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 868 869 /* the acpi ged is always exist */ 870 hotplug_handler_unplug_request(HOTPLUG_HANDLER(lams->acpi_ged), dev, 871 errp); 872 } 873 874 static void virt_machine_device_unplug_request(HotplugHandler *hotplug_dev, 875 DeviceState *dev, Error **errp) 876 { 877 if (memhp_type_supported(dev)) { 878 virt_mem_unplug_request(hotplug_dev, dev, errp); 879 } 880 } 881 882 static void virt_mem_unplug(HotplugHandler *hotplug_dev, 883 DeviceState *dev, Error **errp) 884 { 885 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 886 887 hotplug_handler_unplug(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp); 888 pc_dimm_unplug(PC_DIMM(dev), MACHINE(lams)); 889 qdev_unrealize(dev); 890 } 891 892 static void virt_machine_device_unplug(HotplugHandler *hotplug_dev, 893 DeviceState *dev, Error **errp) 894 { 895 if (memhp_type_supported(dev)) { 896 virt_mem_unplug(hotplug_dev, dev, errp); 897 } 898 } 899 900 static void virt_mem_plug(HotplugHandler *hotplug_dev, 901 DeviceState *dev, Error **errp) 902 { 903 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 904 905 pc_dimm_plug(PC_DIMM(dev), MACHINE(lams)); 906 hotplug_handler_plug(HOTPLUG_HANDLER(lams->acpi_ged), 907 dev, &error_abort); 908 } 909 910 static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev, 911 DeviceState *dev, Error **errp) 912 { 913 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 914 MachineClass *mc = MACHINE_GET_CLASS(lams); 915 916 if (device_is_dynamic_sysbus(mc, dev)) { 917 if (lams->platform_bus_dev) { 918 platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev), 919 SYS_BUS_DEVICE(dev)); 920 } 921 } else if (memhp_type_supported(dev)) { 922 virt_mem_plug(hotplug_dev, dev, errp); 923 } 924 } 925 926 static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, 927 DeviceState *dev) 928 { 929 MachineClass *mc = MACHINE_GET_CLASS(machine); 930 931 if (device_is_dynamic_sysbus(mc, dev) || 932 memhp_type_supported(dev)) { 933 return HOTPLUG_HANDLER(machine); 934 } 935 return NULL; 936 } 937 938 static void loongarch_class_init(ObjectClass *oc, void *data) 939 { 940 MachineClass *mc = MACHINE_CLASS(oc); 941 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 942 943 mc->desc = "Loongson-3A5000 LS7A1000 machine"; 944 mc->init = loongarch_init; 945 mc->default_ram_size = 1 * GiB; 946 mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464"); 947 mc->default_ram_id = "loongarch.ram"; 948 mc->max_cpus = LOONGARCH_MAX_VCPUS; 949 mc->is_default = 1; 950 mc->default_kernel_irqchip_split = false; 951 mc->block_default_type = IF_VIRTIO; 952 mc->default_boot_order = "c"; 953 mc->no_cdrom = 1; 954 mc->get_hotplug_handler = virt_machine_get_hotplug_handler; 955 hc->plug = loongarch_machine_device_plug_cb; 956 hc->pre_plug = virt_machine_device_pre_plug; 957 hc->unplug_request = virt_machine_device_unplug_request; 958 hc->unplug = virt_machine_device_unplug; 959 960 object_class_property_add(oc, "acpi", "OnOffAuto", 961 loongarch_get_acpi, loongarch_set_acpi, 962 NULL, NULL); 963 object_class_property_set_description(oc, "acpi", 964 "Enable ACPI"); 965 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); 966 #ifdef CONFIG_TPM 967 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS); 968 #endif 969 } 970 971 static const TypeInfo loongarch_machine_types[] = { 972 { 973 .name = TYPE_LOONGARCH_MACHINE, 974 .parent = TYPE_MACHINE, 975 .instance_size = sizeof(LoongArchMachineState), 976 .class_init = loongarch_class_init, 977 .instance_init = loongarch_machine_initfn, 978 .interfaces = (InterfaceInfo[]) { 979 { TYPE_HOTPLUG_HANDLER }, 980 { } 981 }, 982 } 983 }; 984 985 DEFINE_TYPES(loongarch_machine_types)