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 #include "sysemu/block-backend.h" 46 #include "hw/block/flash.h" 47 48 static void virt_flash_create(LoongArchMachineState *lams) 49 { 50 DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01); 51 52 qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE); 53 qdev_prop_set_uint8(dev, "width", 4); 54 qdev_prop_set_uint8(dev, "device-width", 2); 55 qdev_prop_set_bit(dev, "big-endian", false); 56 qdev_prop_set_uint16(dev, "id0", 0x89); 57 qdev_prop_set_uint16(dev, "id1", 0x18); 58 qdev_prop_set_uint16(dev, "id2", 0x00); 59 qdev_prop_set_uint16(dev, "id3", 0x00); 60 qdev_prop_set_string(dev, "name", "virt.flash"); 61 object_property_add_child(OBJECT(lams), "virt.flash", OBJECT(dev)); 62 object_property_add_alias(OBJECT(lams), "pflash", 63 OBJECT(dev), "drive"); 64 65 lams->flash = PFLASH_CFI01(dev); 66 } 67 68 static void virt_flash_map(LoongArchMachineState *lams, 69 MemoryRegion *sysmem) 70 { 71 PFlashCFI01 *flash = lams->flash; 72 DeviceState *dev = DEVICE(flash); 73 hwaddr base = VIRT_FLASH_BASE; 74 hwaddr size = VIRT_FLASH_SIZE; 75 76 assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE)); 77 assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX); 78 79 qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE); 80 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 81 memory_region_add_subregion(sysmem, base, 82 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0)); 83 84 } 85 86 static void fdt_add_flash_node(LoongArchMachineState *lams) 87 { 88 MachineState *ms = MACHINE(lams); 89 char *nodename; 90 91 hwaddr flash_base = VIRT_FLASH_BASE; 92 hwaddr flash_size = VIRT_FLASH_SIZE; 93 94 nodename = g_strdup_printf("/flash@%" PRIx64, flash_base); 95 qemu_fdt_add_subnode(ms->fdt, nodename); 96 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash"); 97 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 98 2, flash_base, 2, flash_size); 99 qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4); 100 g_free(nodename); 101 } 102 103 static void fdt_add_rtc_node(LoongArchMachineState *lams) 104 { 105 char *nodename; 106 hwaddr base = VIRT_RTC_REG_BASE; 107 hwaddr size = VIRT_RTC_LEN; 108 MachineState *ms = MACHINE(lams); 109 110 nodename = g_strdup_printf("/rtc@%" PRIx64, base); 111 qemu_fdt_add_subnode(ms->fdt, nodename); 112 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongson,ls7a-rtc"); 113 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size); 114 g_free(nodename); 115 } 116 117 static void fdt_add_uart_node(LoongArchMachineState *lams) 118 { 119 char *nodename; 120 hwaddr base = VIRT_UART_BASE; 121 hwaddr size = VIRT_UART_SIZE; 122 MachineState *ms = MACHINE(lams); 123 124 nodename = g_strdup_printf("/serial@%" PRIx64, base); 125 qemu_fdt_add_subnode(ms->fdt, nodename); 126 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "ns16550a"); 127 qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0, base, 0x0, size); 128 qemu_fdt_setprop_cell(ms->fdt, nodename, "clock-frequency", 100000000); 129 qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename); 130 g_free(nodename); 131 } 132 133 static void create_fdt(LoongArchMachineState *lams) 134 { 135 MachineState *ms = MACHINE(lams); 136 137 ms->fdt = create_device_tree(&lams->fdt_size); 138 if (!ms->fdt) { 139 error_report("create_device_tree() failed"); 140 exit(1); 141 } 142 143 /* Header */ 144 qemu_fdt_setprop_string(ms->fdt, "/", "compatible", 145 "linux,dummy-loongson3"); 146 qemu_fdt_setprop_cell(ms->fdt, "/", "#address-cells", 0x2); 147 qemu_fdt_setprop_cell(ms->fdt, "/", "#size-cells", 0x2); 148 qemu_fdt_add_subnode(ms->fdt, "/chosen"); 149 } 150 151 static void fdt_add_cpu_nodes(const LoongArchMachineState *lams) 152 { 153 int num; 154 const MachineState *ms = MACHINE(lams); 155 int smp_cpus = ms->smp.cpus; 156 157 qemu_fdt_add_subnode(ms->fdt, "/cpus"); 158 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", 0x1); 159 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0); 160 161 /* cpu nodes */ 162 for (num = smp_cpus - 1; num >= 0; num--) { 163 char *nodename = g_strdup_printf("/cpus/cpu@%d", num); 164 LoongArchCPU *cpu = LOONGARCH_CPU(qemu_get_cpu(num)); 165 166 qemu_fdt_add_subnode(ms->fdt, nodename); 167 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu"); 168 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", 169 cpu->dtb_compatible); 170 qemu_fdt_setprop_cell(ms->fdt, nodename, "reg", num); 171 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", 172 qemu_fdt_alloc_phandle(ms->fdt)); 173 g_free(nodename); 174 } 175 176 /*cpu map */ 177 qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map"); 178 179 for (num = smp_cpus - 1; num >= 0; num--) { 180 char *cpu_path = g_strdup_printf("/cpus/cpu@%d", num); 181 char *map_path; 182 183 if (ms->smp.threads > 1) { 184 map_path = g_strdup_printf( 185 "/cpus/cpu-map/socket%d/core%d/thread%d", 186 num / (ms->smp.cores * ms->smp.threads), 187 (num / ms->smp.threads) % ms->smp.cores, 188 num % ms->smp.threads); 189 } else { 190 map_path = g_strdup_printf( 191 "/cpus/cpu-map/socket%d/core%d", 192 num / ms->smp.cores, 193 num % ms->smp.cores); 194 } 195 qemu_fdt_add_path(ms->fdt, map_path); 196 qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path); 197 198 g_free(map_path); 199 g_free(cpu_path); 200 } 201 } 202 203 static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams) 204 { 205 char *nodename; 206 hwaddr base = VIRT_FWCFG_BASE; 207 const MachineState *ms = MACHINE(lams); 208 209 nodename = g_strdup_printf("/fw_cfg@%" PRIx64, base); 210 qemu_fdt_add_subnode(ms->fdt, nodename); 211 qemu_fdt_setprop_string(ms->fdt, nodename, 212 "compatible", "qemu,fw-cfg-mmio"); 213 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 214 2, base, 2, 0x18); 215 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); 216 g_free(nodename); 217 } 218 219 static void fdt_add_pcie_node(const LoongArchMachineState *lams) 220 { 221 char *nodename; 222 hwaddr base_mmio = VIRT_PCI_MEM_BASE; 223 hwaddr size_mmio = VIRT_PCI_MEM_SIZE; 224 hwaddr base_pio = VIRT_PCI_IO_BASE; 225 hwaddr size_pio = VIRT_PCI_IO_SIZE; 226 hwaddr base_pcie = VIRT_PCI_CFG_BASE; 227 hwaddr size_pcie = VIRT_PCI_CFG_SIZE; 228 hwaddr base = base_pcie; 229 230 const MachineState *ms = MACHINE(lams); 231 232 nodename = g_strdup_printf("/pcie@%" PRIx64, base); 233 qemu_fdt_add_subnode(ms->fdt, nodename); 234 qemu_fdt_setprop_string(ms->fdt, nodename, 235 "compatible", "pci-host-ecam-generic"); 236 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci"); 237 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3); 238 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2); 239 qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0); 240 qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0, 241 PCIE_MMCFG_BUS(VIRT_PCI_CFG_SIZE - 1)); 242 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); 243 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 244 2, base_pcie, 2, size_pcie); 245 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges", 246 1, FDT_PCI_RANGE_IOPORT, 2, VIRT_PCI_IO_OFFSET, 247 2, base_pio, 2, size_pio, 248 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, 249 2, base_mmio, 2, size_mmio); 250 g_free(nodename); 251 } 252 253 static void fdt_add_irqchip_node(LoongArchMachineState *lams) 254 { 255 MachineState *ms = MACHINE(lams); 256 char *nodename; 257 uint32_t irqchip_phandle; 258 259 irqchip_phandle = qemu_fdt_alloc_phandle(ms->fdt); 260 qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", irqchip_phandle); 261 262 nodename = g_strdup_printf("/intc@%lx", VIRT_IOAPIC_REG_BASE); 263 qemu_fdt_add_subnode(ms->fdt, nodename); 264 qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3); 265 qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0); 266 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2); 267 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2); 268 qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0); 269 270 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", 271 "loongarch,ls7a"); 272 273 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 274 2, VIRT_IOAPIC_REG_BASE, 275 2, PCH_PIC_ROUTE_ENTRY_OFFSET); 276 277 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", irqchip_phandle); 278 g_free(nodename); 279 } 280 281 #define PM_BASE 0x10080000 282 #define PM_SIZE 0x100 283 #define PM_CTRL 0x10 284 285 static void virt_build_smbios(LoongArchMachineState *lams) 286 { 287 MachineState *ms = MACHINE(lams); 288 MachineClass *mc = MACHINE_GET_CLASS(lams); 289 uint8_t *smbios_tables, *smbios_anchor; 290 size_t smbios_tables_len, smbios_anchor_len; 291 const char *product = "QEMU Virtual Machine"; 292 293 if (!lams->fw_cfg) { 294 return; 295 } 296 297 smbios_set_defaults("QEMU", product, mc->name, false, 298 true, SMBIOS_ENTRY_POINT_TYPE_64); 299 300 smbios_get_tables(ms, NULL, 0, &smbios_tables, &smbios_tables_len, 301 &smbios_anchor, &smbios_anchor_len, &error_fatal); 302 303 if (smbios_anchor) { 304 fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-tables", 305 smbios_tables, smbios_tables_len); 306 fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-anchor", 307 smbios_anchor, smbios_anchor_len); 308 } 309 } 310 311 static void virt_machine_done(Notifier *notifier, void *data) 312 { 313 LoongArchMachineState *lams = container_of(notifier, 314 LoongArchMachineState, machine_done); 315 virt_build_smbios(lams); 316 loongarch_acpi_setup(lams); 317 } 318 319 struct memmap_entry { 320 uint64_t address; 321 uint64_t length; 322 uint32_t type; 323 uint32_t reserved; 324 }; 325 326 static struct memmap_entry *memmap_table; 327 static unsigned memmap_entries; 328 329 static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type) 330 { 331 /* Ensure there are no duplicate entries. */ 332 for (unsigned i = 0; i < memmap_entries; i++) { 333 assert(memmap_table[i].address != address); 334 } 335 336 memmap_table = g_renew(struct memmap_entry, memmap_table, 337 memmap_entries + 1); 338 memmap_table[memmap_entries].address = cpu_to_le64(address); 339 memmap_table[memmap_entries].length = cpu_to_le64(length); 340 memmap_table[memmap_entries].type = cpu_to_le32(type); 341 memmap_table[memmap_entries].reserved = 0; 342 memmap_entries++; 343 } 344 345 /* 346 * This is a placeholder for missing ACPI, 347 * and will eventually be replaced. 348 */ 349 static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size) 350 { 351 return 0; 352 } 353 354 static void loongarch_virt_pm_write(void *opaque, hwaddr addr, 355 uint64_t val, unsigned size) 356 { 357 if (addr != PM_CTRL) { 358 return; 359 } 360 361 switch (val) { 362 case 0x00: 363 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 364 return; 365 case 0xff: 366 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 367 return; 368 default: 369 return; 370 } 371 } 372 373 static const MemoryRegionOps loongarch_virt_pm_ops = { 374 .read = loongarch_virt_pm_read, 375 .write = loongarch_virt_pm_write, 376 .endianness = DEVICE_NATIVE_ENDIAN, 377 .valid = { 378 .min_access_size = 1, 379 .max_access_size = 1 380 } 381 }; 382 383 static struct _loaderparams { 384 uint64_t ram_size; 385 const char *kernel_filename; 386 const char *kernel_cmdline; 387 const char *initrd_filename; 388 } loaderparams; 389 390 static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) 391 { 392 return addr & 0x1fffffffll; 393 } 394 395 static int64_t load_kernel_info(void) 396 { 397 uint64_t kernel_entry, kernel_low, kernel_high; 398 ssize_t kernel_size; 399 400 kernel_size = load_elf(loaderparams.kernel_filename, NULL, 401 cpu_loongarch_virt_to_phys, NULL, 402 &kernel_entry, &kernel_low, 403 &kernel_high, NULL, 0, 404 EM_LOONGARCH, 1, 0); 405 406 if (kernel_size < 0) { 407 error_report("could not load kernel '%s': %s", 408 loaderparams.kernel_filename, 409 load_elf_strerror(kernel_size)); 410 exit(1); 411 } 412 return kernel_entry; 413 } 414 415 static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState *lams) 416 { 417 DeviceState *dev; 418 MachineState *ms = MACHINE(lams); 419 uint32_t event = ACPI_GED_PWR_DOWN_EVT; 420 421 if (ms->ram_slots) { 422 event |= ACPI_GED_MEM_HOTPLUG_EVT; 423 } 424 dev = qdev_new(TYPE_ACPI_GED); 425 qdev_prop_set_uint32(dev, "ged-event", event); 426 427 /* ged event */ 428 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, VIRT_GED_EVT_ADDR); 429 /* memory hotplug */ 430 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, VIRT_GED_MEM_ADDR); 431 /* ged regs used for reset and power down */ 432 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR); 433 434 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 435 qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - PCH_PIC_IRQ_OFFSET)); 436 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 437 return dev; 438 } 439 440 static DeviceState *create_platform_bus(DeviceState *pch_pic) 441 { 442 DeviceState *dev; 443 SysBusDevice *sysbus; 444 int i, irq; 445 MemoryRegion *sysmem = get_system_memory(); 446 447 dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE); 448 dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE); 449 qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS); 450 qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE); 451 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 452 453 sysbus = SYS_BUS_DEVICE(dev); 454 for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) { 455 irq = VIRT_PLATFORM_BUS_IRQ - PCH_PIC_IRQ_OFFSET + i; 456 sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq)); 457 } 458 459 memory_region_add_subregion(sysmem, 460 VIRT_PLATFORM_BUS_BASEADDRESS, 461 sysbus_mmio_get_region(sysbus, 0)); 462 return dev; 463 } 464 465 static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams) 466 { 467 DeviceState *gpex_dev; 468 SysBusDevice *d; 469 PCIBus *pci_bus; 470 MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg; 471 MemoryRegion *mmio_alias, *mmio_reg, *pm_mem; 472 int i; 473 474 gpex_dev = qdev_new(TYPE_GPEX_HOST); 475 d = SYS_BUS_DEVICE(gpex_dev); 476 sysbus_realize_and_unref(d, &error_fatal); 477 pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus; 478 lams->pci_bus = pci_bus; 479 480 /* Map only part size_ecam bytes of ECAM space */ 481 ecam_alias = g_new0(MemoryRegion, 1); 482 ecam_reg = sysbus_mmio_get_region(d, 0); 483 memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam", 484 ecam_reg, 0, VIRT_PCI_CFG_SIZE); 485 memory_region_add_subregion(get_system_memory(), VIRT_PCI_CFG_BASE, 486 ecam_alias); 487 488 /* Map PCI mem space */ 489 mmio_alias = g_new0(MemoryRegion, 1); 490 mmio_reg = sysbus_mmio_get_region(d, 1); 491 memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio", 492 mmio_reg, VIRT_PCI_MEM_BASE, VIRT_PCI_MEM_SIZE); 493 memory_region_add_subregion(get_system_memory(), VIRT_PCI_MEM_BASE, 494 mmio_alias); 495 496 /* Map PCI IO port space. */ 497 pio_alias = g_new0(MemoryRegion, 1); 498 pio_reg = sysbus_mmio_get_region(d, 2); 499 memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg, 500 VIRT_PCI_IO_OFFSET, VIRT_PCI_IO_SIZE); 501 memory_region_add_subregion(get_system_memory(), VIRT_PCI_IO_BASE, 502 pio_alias); 503 504 for (i = 0; i < GPEX_NUM_IRQS; i++) { 505 sysbus_connect_irq(d, i, 506 qdev_get_gpio_in(pch_pic, 16 + i)); 507 gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i); 508 } 509 510 serial_mm_init(get_system_memory(), VIRT_UART_BASE, 0, 511 qdev_get_gpio_in(pch_pic, 512 VIRT_UART_IRQ - PCH_PIC_IRQ_OFFSET), 513 115200, serial_hd(0), DEVICE_LITTLE_ENDIAN); 514 fdt_add_uart_node(lams); 515 516 /* Network init */ 517 for (i = 0; i < nb_nics; i++) { 518 NICInfo *nd = &nd_table[i]; 519 520 if (!nd->model) { 521 nd->model = g_strdup("virtio"); 522 } 523 524 pci_nic_init_nofail(nd, pci_bus, nd->model, NULL); 525 } 526 527 /* 528 * There are some invalid guest memory access. 529 * Create some unimplemented devices to emulate this. 530 */ 531 create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4); 532 sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE, 533 qdev_get_gpio_in(pch_pic, 534 VIRT_RTC_IRQ - PCH_PIC_IRQ_OFFSET)); 535 fdt_add_rtc_node(lams); 536 537 pm_mem = g_new(MemoryRegion, 1); 538 memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops, 539 NULL, "loongarch_virt_pm", PM_SIZE); 540 memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); 541 /* acpi ged */ 542 lams->acpi_ged = create_acpi_ged(pch_pic, lams); 543 /* platform bus */ 544 lams->platform_bus_dev = create_platform_bus(pch_pic); 545 } 546 547 static void loongarch_irq_init(LoongArchMachineState *lams) 548 { 549 MachineState *ms = MACHINE(lams); 550 DeviceState *pch_pic, *pch_msi, *cpudev; 551 DeviceState *ipi, *extioi; 552 SysBusDevice *d; 553 LoongArchCPU *lacpu; 554 CPULoongArchState *env; 555 CPUState *cpu_state; 556 int cpu, pin, i, start, num; 557 558 ipi = qdev_new(TYPE_LOONGARCH_IPI); 559 sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); 560 561 extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); 562 sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); 563 564 /* 565 * The connection of interrupts: 566 * +-----+ +---------+ +-------+ 567 * | IPI |--> | CPUINTC | <-- | Timer | 568 * +-----+ +---------+ +-------+ 569 * ^ 570 * | 571 * +---------+ 572 * | EIOINTC | 573 * +---------+ 574 * ^ ^ 575 * | | 576 * +---------+ +---------+ 577 * | PCH-PIC | | PCH-MSI | 578 * +---------+ +---------+ 579 * ^ ^ ^ 580 * | | | 581 * +--------+ +---------+ +---------+ 582 * | UARTs | | Devices | | Devices | 583 * +--------+ +---------+ +---------+ 584 */ 585 for (cpu = 0; cpu < ms->smp.cpus; cpu++) { 586 cpu_state = qemu_get_cpu(cpu); 587 cpudev = DEVICE(cpu_state); 588 lacpu = LOONGARCH_CPU(cpu_state); 589 env = &(lacpu->env); 590 591 /* connect ipi irq to cpu irq */ 592 qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); 593 /* IPI iocsr memory region */ 594 memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX, 595 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 596 cpu * 2)); 597 memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR, 598 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 599 cpu * 2 + 1)); 600 /* extioi iocsr memory region */ 601 memory_region_add_subregion(&env->system_iocsr, APIC_BASE, 602 sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 603 cpu)); 604 } 605 606 /* 607 * connect ext irq to the cpu irq 608 * cpu_pin[9:2] <= intc_pin[7:0] 609 */ 610 for (cpu = 0; cpu < ms->smp.cpus; cpu++) { 611 cpudev = DEVICE(qemu_get_cpu(cpu)); 612 for (pin = 0; pin < LS3A_INTC_IP; pin++) { 613 qdev_connect_gpio_out(extioi, (cpu * 8 + pin), 614 qdev_get_gpio_in(cpudev, pin + 2)); 615 } 616 } 617 618 pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); 619 d = SYS_BUS_DEVICE(pch_pic); 620 sysbus_realize_and_unref(d, &error_fatal); 621 memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE, 622 sysbus_mmio_get_region(d, 0)); 623 memory_region_add_subregion(get_system_memory(), 624 VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET, 625 sysbus_mmio_get_region(d, 1)); 626 memory_region_add_subregion(get_system_memory(), 627 VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO, 628 sysbus_mmio_get_region(d, 2)); 629 630 /* Connect 64 pch_pic irqs to extioi */ 631 for (int i = 0; i < PCH_PIC_IRQ_NUM; i++) { 632 qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); 633 } 634 635 pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); 636 start = PCH_PIC_IRQ_NUM; 637 num = EXTIOI_IRQS - start; 638 qdev_prop_set_uint32(pch_msi, "msi_irq_base", start); 639 qdev_prop_set_uint32(pch_msi, "msi_irq_num", num); 640 d = SYS_BUS_DEVICE(pch_msi); 641 sysbus_realize_and_unref(d, &error_fatal); 642 sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); 643 for (i = 0; i < num; i++) { 644 /* Connect pch_msi irqs to extioi */ 645 qdev_connect_gpio_out(DEVICE(d), i, 646 qdev_get_gpio_in(extioi, i + start)); 647 } 648 649 loongarch_devices_init(pch_pic, lams); 650 } 651 652 static void loongarch_firmware_init(LoongArchMachineState *lams) 653 { 654 char *filename = MACHINE(lams)->firmware; 655 char *bios_name = NULL; 656 int bios_size; 657 658 lams->bios_loaded = false; 659 660 virt_flash_map(lams, get_system_memory()); 661 662 if (filename) { 663 bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 664 if (!bios_name) { 665 error_report("Could not find ROM image '%s'", filename); 666 exit(1); 667 } 668 669 bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE); 670 if (bios_size < 0) { 671 error_report("Could not load ROM image '%s'", bios_name); 672 exit(1); 673 } 674 675 g_free(bios_name); 676 677 memory_region_init_ram(&lams->bios, NULL, "loongarch.bios", 678 VIRT_BIOS_SIZE, &error_fatal); 679 memory_region_set_readonly(&lams->bios, true); 680 memory_region_add_subregion(get_system_memory(), VIRT_BIOS_BASE, &lams->bios); 681 lams->bios_loaded = true; 682 } 683 684 } 685 686 static void reset_load_elf(void *opaque) 687 { 688 LoongArchCPU *cpu = opaque; 689 CPULoongArchState *env = &cpu->env; 690 691 cpu_reset(CPU(cpu)); 692 if (env->load_elf) { 693 cpu_set_pc(CPU(cpu), env->elf_address); 694 } 695 } 696 697 static void fw_cfg_add_kernel_info(FWCfgState *fw_cfg) 698 { 699 /* 700 * Expose the kernel, the command line, and the initrd in fw_cfg. 701 * We don't process them here at all, it's all left to the 702 * firmware. 703 */ 704 load_image_to_fw_cfg(fw_cfg, 705 FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA, 706 loaderparams.kernel_filename, 707 false); 708 709 if (loaderparams.initrd_filename) { 710 load_image_to_fw_cfg(fw_cfg, 711 FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA, 712 loaderparams.initrd_filename, false); 713 } 714 715 if (loaderparams.kernel_cmdline) { 716 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, 717 strlen(loaderparams.kernel_cmdline) + 1); 718 fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, 719 loaderparams.kernel_cmdline); 720 } 721 } 722 723 static void loongarch_firmware_boot(LoongArchMachineState *lams) 724 { 725 fw_cfg_add_kernel_info(lams->fw_cfg); 726 } 727 728 static void loongarch_direct_kernel_boot(LoongArchMachineState *lams) 729 { 730 MachineState *machine = MACHINE(lams); 731 int64_t kernel_addr = 0; 732 LoongArchCPU *lacpu; 733 int i; 734 735 kernel_addr = load_kernel_info(); 736 if (!machine->firmware) { 737 for (i = 0; i < machine->smp.cpus; i++) { 738 lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); 739 lacpu->env.load_elf = true; 740 lacpu->env.elf_address = kernel_addr; 741 } 742 } 743 } 744 745 static void loongarch_init(MachineState *machine) 746 { 747 LoongArchCPU *lacpu; 748 const char *cpu_model = machine->cpu_type; 749 ram_addr_t offset = 0; 750 ram_addr_t ram_size = machine->ram_size; 751 uint64_t highram_size = 0; 752 MemoryRegion *address_space_mem = get_system_memory(); 753 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 754 int i; 755 hwaddr fdt_base; 756 757 if (!cpu_model) { 758 cpu_model = LOONGARCH_CPU_TYPE_NAME("la464"); 759 } 760 761 if (!strstr(cpu_model, "la464")) { 762 error_report("LoongArch/TCG needs cpu type la464"); 763 exit(1); 764 } 765 766 if (ram_size < 1 * GiB) { 767 error_report("ram_size must be greater than 1G."); 768 exit(1); 769 } 770 create_fdt(lams); 771 /* Init CPUs */ 772 for (i = 0; i < machine->smp.cpus; i++) { 773 cpu_create(machine->cpu_type); 774 } 775 fdt_add_cpu_nodes(lams); 776 /* Add memory region */ 777 memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram", 778 machine->ram, 0, 256 * MiB); 779 memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); 780 offset += 256 * MiB; 781 memmap_add_entry(0, 256 * MiB, 1); 782 highram_size = ram_size - 256 * MiB; 783 memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", 784 machine->ram, offset, highram_size); 785 memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); 786 memmap_add_entry(0x90000000, highram_size, 1); 787 788 /* initialize device memory address space */ 789 if (machine->ram_size < machine->maxram_size) { 790 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 791 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 792 793 if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { 794 error_report("unsupported amount of memory slots: %"PRIu64, 795 machine->ram_slots); 796 exit(EXIT_FAILURE); 797 } 798 799 if (QEMU_ALIGN_UP(machine->maxram_size, 800 TARGET_PAGE_SIZE) != machine->maxram_size) { 801 error_report("maximum memory size must by aligned to multiple of " 802 "%d bytes", TARGET_PAGE_SIZE); 803 exit(EXIT_FAILURE); 804 } 805 /* device memory base is the top of high memory address. */ 806 machine->device_memory->base = 0x90000000 + highram_size; 807 machine->device_memory->base = 808 ROUND_UP(machine->device_memory->base, 1 * GiB); 809 810 memory_region_init(&machine->device_memory->mr, OBJECT(lams), 811 "device-memory", device_mem_size); 812 memory_region_add_subregion(address_space_mem, machine->device_memory->base, 813 &machine->device_memory->mr); 814 } 815 816 /* Add isa io region */ 817 memory_region_init_alias(&lams->isa_io, NULL, "isa-io", 818 get_system_io(), 0, VIRT_ISA_IO_SIZE); 819 memory_region_add_subregion(address_space_mem, VIRT_ISA_IO_BASE, 820 &lams->isa_io); 821 /* load the BIOS image. */ 822 loongarch_firmware_init(lams); 823 824 /* fw_cfg init */ 825 lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine); 826 rom_set_fw(lams->fw_cfg); 827 if (lams->fw_cfg != NULL) { 828 fw_cfg_add_file(lams->fw_cfg, "etc/memmap", 829 memmap_table, 830 sizeof(struct memmap_entry) * (memmap_entries)); 831 } 832 fdt_add_fw_cfg_node(lams); 833 loaderparams.ram_size = ram_size; 834 loaderparams.kernel_filename = machine->kernel_filename; 835 loaderparams.kernel_cmdline = machine->kernel_cmdline; 836 loaderparams.initrd_filename = machine->initrd_filename; 837 /* load the kernel. */ 838 if (loaderparams.kernel_filename) { 839 if (lams->bios_loaded) { 840 loongarch_firmware_boot(lams); 841 } else { 842 loongarch_direct_kernel_boot(lams); 843 } 844 } 845 fdt_add_flash_node(lams); 846 /* register reset function */ 847 for (i = 0; i < machine->smp.cpus; i++) { 848 lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); 849 qemu_register_reset(reset_load_elf, lacpu); 850 } 851 /* Initialize the IO interrupt subsystem */ 852 loongarch_irq_init(lams); 853 fdt_add_irqchip_node(lams); 854 platform_bus_add_all_fdt_nodes(machine->fdt, "/intc", 855 VIRT_PLATFORM_BUS_BASEADDRESS, 856 VIRT_PLATFORM_BUS_SIZE, 857 VIRT_PLATFORM_BUS_IRQ); 858 lams->machine_done.notify = virt_machine_done; 859 qemu_add_machine_init_done_notifier(&lams->machine_done); 860 fdt_add_pcie_node(lams); 861 /* 862 * Since lowmem region starts from 0 and Linux kernel legacy start address 863 * at 2 MiB, FDT base address is located at 1 MiB to avoid NULL pointer 864 * access. FDT size limit with 1 MiB. 865 * Put the FDT into the memory map as a ROM image: this will ensure 866 * the FDT is copied again upon reset, even if addr points into RAM. 867 */ 868 fdt_base = 1 * MiB; 869 qemu_fdt_dumpdtb(machine->fdt, lams->fdt_size); 870 rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, fdt_base); 871 } 872 873 bool loongarch_is_acpi_enabled(LoongArchMachineState *lams) 874 { 875 if (lams->acpi == ON_OFF_AUTO_OFF) { 876 return false; 877 } 878 return true; 879 } 880 881 static void loongarch_get_acpi(Object *obj, Visitor *v, const char *name, 882 void *opaque, Error **errp) 883 { 884 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 885 OnOffAuto acpi = lams->acpi; 886 887 visit_type_OnOffAuto(v, name, &acpi, errp); 888 } 889 890 static void loongarch_set_acpi(Object *obj, Visitor *v, const char *name, 891 void *opaque, Error **errp) 892 { 893 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 894 895 visit_type_OnOffAuto(v, name, &lams->acpi, errp); 896 } 897 898 static void loongarch_machine_initfn(Object *obj) 899 { 900 LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); 901 902 lams->acpi = ON_OFF_AUTO_AUTO; 903 lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); 904 lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); 905 virt_flash_create(lams); 906 } 907 908 static bool memhp_type_supported(DeviceState *dev) 909 { 910 /* we only support pc dimm now */ 911 return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) && 912 !object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 913 } 914 915 static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 916 Error **errp) 917 { 918 pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); 919 } 920 921 static void virt_machine_device_pre_plug(HotplugHandler *hotplug_dev, 922 DeviceState *dev, Error **errp) 923 { 924 if (memhp_type_supported(dev)) { 925 virt_mem_pre_plug(hotplug_dev, dev, errp); 926 } 927 } 928 929 static void virt_mem_unplug_request(HotplugHandler *hotplug_dev, 930 DeviceState *dev, Error **errp) 931 { 932 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 933 934 /* the acpi ged is always exist */ 935 hotplug_handler_unplug_request(HOTPLUG_HANDLER(lams->acpi_ged), dev, 936 errp); 937 } 938 939 static void virt_machine_device_unplug_request(HotplugHandler *hotplug_dev, 940 DeviceState *dev, Error **errp) 941 { 942 if (memhp_type_supported(dev)) { 943 virt_mem_unplug_request(hotplug_dev, dev, errp); 944 } 945 } 946 947 static void virt_mem_unplug(HotplugHandler *hotplug_dev, 948 DeviceState *dev, Error **errp) 949 { 950 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 951 952 hotplug_handler_unplug(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp); 953 pc_dimm_unplug(PC_DIMM(dev), MACHINE(lams)); 954 qdev_unrealize(dev); 955 } 956 957 static void virt_machine_device_unplug(HotplugHandler *hotplug_dev, 958 DeviceState *dev, Error **errp) 959 { 960 if (memhp_type_supported(dev)) { 961 virt_mem_unplug(hotplug_dev, dev, errp); 962 } 963 } 964 965 static void virt_mem_plug(HotplugHandler *hotplug_dev, 966 DeviceState *dev, Error **errp) 967 { 968 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 969 970 pc_dimm_plug(PC_DIMM(dev), MACHINE(lams)); 971 hotplug_handler_plug(HOTPLUG_HANDLER(lams->acpi_ged), 972 dev, &error_abort); 973 } 974 975 static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev, 976 DeviceState *dev, Error **errp) 977 { 978 LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); 979 MachineClass *mc = MACHINE_GET_CLASS(lams); 980 981 if (device_is_dynamic_sysbus(mc, dev)) { 982 if (lams->platform_bus_dev) { 983 platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev), 984 SYS_BUS_DEVICE(dev)); 985 } 986 } else if (memhp_type_supported(dev)) { 987 virt_mem_plug(hotplug_dev, dev, errp); 988 } 989 } 990 991 static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, 992 DeviceState *dev) 993 { 994 MachineClass *mc = MACHINE_GET_CLASS(machine); 995 996 if (device_is_dynamic_sysbus(mc, dev) || 997 memhp_type_supported(dev)) { 998 return HOTPLUG_HANDLER(machine); 999 } 1000 return NULL; 1001 } 1002 1003 static void loongarch_class_init(ObjectClass *oc, void *data) 1004 { 1005 MachineClass *mc = MACHINE_CLASS(oc); 1006 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 1007 1008 mc->desc = "Loongson-3A5000 LS7A1000 machine"; 1009 mc->init = loongarch_init; 1010 mc->default_ram_size = 1 * GiB; 1011 mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464"); 1012 mc->default_ram_id = "loongarch.ram"; 1013 mc->max_cpus = LOONGARCH_MAX_VCPUS; 1014 mc->is_default = 1; 1015 mc->default_kernel_irqchip_split = false; 1016 mc->block_default_type = IF_VIRTIO; 1017 mc->default_boot_order = "c"; 1018 mc->no_cdrom = 1; 1019 mc->get_hotplug_handler = virt_machine_get_hotplug_handler; 1020 hc->plug = loongarch_machine_device_plug_cb; 1021 hc->pre_plug = virt_machine_device_pre_plug; 1022 hc->unplug_request = virt_machine_device_unplug_request; 1023 hc->unplug = virt_machine_device_unplug; 1024 1025 object_class_property_add(oc, "acpi", "OnOffAuto", 1026 loongarch_get_acpi, loongarch_set_acpi, 1027 NULL, NULL); 1028 object_class_property_set_description(oc, "acpi", 1029 "Enable ACPI"); 1030 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); 1031 #ifdef CONFIG_TPM 1032 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS); 1033 #endif 1034 } 1035 1036 static const TypeInfo loongarch_machine_types[] = { 1037 { 1038 .name = TYPE_LOONGARCH_MACHINE, 1039 .parent = TYPE_MACHINE, 1040 .instance_size = sizeof(LoongArchMachineState), 1041 .class_init = loongarch_class_init, 1042 .instance_init = loongarch_machine_initfn, 1043 .interfaces = (InterfaceInfo[]) { 1044 { TYPE_HOTPLUG_HANDLER }, 1045 { } 1046 }, 1047 } 1048 }; 1049 1050 DEFINE_TYPES(loongarch_machine_types) 1051