1 /* 2 * Generic Loongson-3 Platform support 3 * 4 * Copyright (c) 2018-2020 Huacai Chen (chenhc@lemote.com) 5 * Copyright (c) 2018-2020 Jiaxun Yang <jiaxun.yang@flygoat.com> 6 * 7 * This program is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation, either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <https://www.gnu.org/licenses/>. 19 */ 20 21 /* 22 * Generic virtualized PC Platform based on Loongson-3 CPU (MIPS64R2 with 23 * extensions, 800~2000MHz) 24 */ 25 26 #include "qemu/osdep.h" 27 #include "qemu/units.h" 28 #include "qemu/cutils.h" 29 #include "qemu/datadir.h" 30 #include "qapi/error.h" 31 #include "elf.h" 32 #include "hw/char/serial-mm.h" 33 #include "hw/intc/loongson_liointc.h" 34 #include "hw/mips/mips.h" 35 #include "hw/mips/fw_cfg.h" 36 #include "hw/mips/loongson3_bootp.h" 37 #include "hw/misc/unimp.h" 38 #include "hw/intc/i8259.h" 39 #include "hw/intc/loongson_ipi.h" 40 #include "hw/loader.h" 41 #include "hw/isa/superio.h" 42 #include "hw/pci/msi.h" 43 #include "hw/pci/pci.h" 44 #include "hw/pci/pci_host.h" 45 #include "hw/pci-host/gpex.h" 46 #include "hw/usb.h" 47 #include "net/net.h" 48 #include "sysemu/kvm.h" 49 #include "sysemu/qtest.h" 50 #include "sysemu/reset.h" 51 #include "sysemu/runstate.h" 52 #include "qemu/error-report.h" 53 54 #define PM_CNTL_MODE 0x10 55 56 #define LOONGSON_MAX_VCPUS 16 57 58 /* 59 * Loongson-3's virtual machine BIOS can be obtained here: 60 * 1, https://github.com/loongson-community/firmware-nonfree 61 * 2, http://dev.lemote.com:8000/files/firmware/UEFI/KVM/bios_loongson3.bin 62 */ 63 #define LOONGSON3_BIOSNAME "bios_loongson3.bin" 64 65 #define UART_IRQ 0 66 #define RTC_IRQ 1 67 #define PCIE_IRQ_BASE 2 68 69 const MemMapEntry virt_memmap[] = { 70 [VIRT_LOWMEM] = { 0x00000000, 0x10000000 }, 71 [VIRT_PM] = { 0x10080000, 0x100 }, 72 [VIRT_FW_CFG] = { 0x10080100, 0x100 }, 73 [VIRT_RTC] = { 0x10081000, 0x1000 }, 74 [VIRT_PCIE_PIO] = { 0x18000000, 0x80000 }, 75 [VIRT_PCIE_ECAM] = { 0x1a000000, 0x2000000 }, 76 [VIRT_BIOS_ROM] = { 0x1fc00000, 0x200000 }, 77 [VIRT_UART] = { 0x1fe001e0, 0x8 }, 78 [VIRT_IPI] = { 0x3ff01000, 0x400 }, 79 [VIRT_LIOINTC] = { 0x3ff01400, 0x64 }, 80 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, 81 [VIRT_HIGHMEM] = { 0x80000000, 0x0 }, /* Variable */ 82 }; 83 84 static const MemMapEntry loader_memmap[] = { 85 [LOADER_KERNEL] = { 0x00000000, 0x4000000 }, 86 [LOADER_INITRD] = { 0x04000000, 0x0 }, /* Variable */ 87 [LOADER_CMDLINE] = { 0x0ff00000, 0x100000 }, 88 }; 89 90 static const MemMapEntry loader_rommap[] = { 91 [LOADER_BOOTROM] = { 0x1fc00000, 0x1000 }, 92 [LOADER_PARAM] = { 0x1fc01000, 0x10000 }, 93 }; 94 95 struct LoongsonMachineState { 96 MachineState parent_obj; 97 MemoryRegion *pio_alias; 98 MemoryRegion *mmio_alias; 99 MemoryRegion *ecam_alias; 100 MemoryRegion *core_iocsr[LOONGSON_MAX_VCPUS]; 101 }; 102 typedef struct LoongsonMachineState LoongsonMachineState; 103 104 #define TYPE_LOONGSON_MACHINE MACHINE_TYPE_NAME("loongson3-virt") 105 DECLARE_INSTANCE_CHECKER(LoongsonMachineState, LOONGSON_MACHINE, TYPE_LOONGSON_MACHINE) 106 107 static struct _loaderparams { 108 uint64_t cpu_freq; 109 uint64_t ram_size; 110 const char *kernel_cmdline; 111 const char *kernel_filename; 112 const char *initrd_filename; 113 uint64_t kernel_entry; 114 uint64_t a0, a1, a2; 115 } loaderparams; 116 117 static uint64_t loongson3_pm_read(void *opaque, hwaddr addr, unsigned size) 118 { 119 return 0; 120 } 121 122 static void loongson3_pm_write(void *opaque, hwaddr addr, 123 uint64_t val, unsigned size) 124 { 125 if (addr != PM_CNTL_MODE) { 126 return; 127 } 128 129 switch (val) { 130 case 0x00: 131 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 132 return; 133 case 0x01: 134 qemu_system_suspend_request(); 135 return; 136 case 0xff: 137 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 138 return; 139 default: 140 return; 141 } 142 } 143 144 static const MemoryRegionOps loongson3_pm_ops = { 145 .read = loongson3_pm_read, 146 .write = loongson3_pm_write, 147 .endianness = DEVICE_NATIVE_ENDIAN, 148 .valid = { 149 .min_access_size = 1, 150 .max_access_size = 1 151 } 152 }; 153 154 #define DEF_LOONGSON3_FREQ (800 * 1000 * 1000) 155 156 static uint64_t get_cpu_freq_hz(void) 157 { 158 #ifdef CONFIG_KVM 159 int ret; 160 uint64_t freq; 161 struct kvm_one_reg freq_reg = { 162 .id = KVM_REG_MIPS_COUNT_HZ, 163 .addr = (uintptr_t)(&freq) 164 }; 165 166 if (kvm_enabled()) { 167 ret = kvm_vcpu_ioctl(first_cpu, KVM_GET_ONE_REG, &freq_reg); 168 if (ret >= 0) { 169 return freq * 2; 170 } 171 } 172 #endif 173 return DEF_LOONGSON3_FREQ; 174 } 175 176 static void init_boot_param(void) 177 { 178 static void *p; 179 struct boot_params *bp; 180 181 p = g_malloc0(loader_rommap[LOADER_PARAM].size); 182 bp = p; 183 184 bp->efi.smbios.vers = cpu_to_le16(1); 185 init_reset_system(&(bp->reset_system)); 186 p += ROUND_UP(sizeof(struct boot_params), 64); 187 init_loongson_params(&(bp->efi.smbios.lp), p, 188 loaderparams.cpu_freq, loaderparams.ram_size); 189 190 rom_add_blob_fixed("params_rom", bp, 191 loader_rommap[LOADER_PARAM].size, 192 loader_rommap[LOADER_PARAM].base); 193 194 g_free(bp); 195 196 loaderparams.a2 = cpu_mips_phys_to_kseg0(NULL, 197 loader_rommap[LOADER_PARAM].base); 198 } 199 200 static void init_boot_rom(void) 201 { 202 const unsigned int boot_code[] = { 203 0x40086000, /* mfc0 t0, CP0_STATUS */ 204 0x240900E4, /* li t1, 0xe4 #set kx, sx, ux, erl */ 205 0x01094025, /* or t0, t0, t1 */ 206 0x3C090040, /* lui t1, 0x40 #set bev */ 207 0x01094025, /* or t0, t0, t1 */ 208 0x40886000, /* mtc0 t0, CP0_STATUS */ 209 0x00000000, 210 0x40806800, /* mtc0 zero, CP0_CAUSE */ 211 0x00000000, 212 0x400A7801, /* mfc0 t2, $15, 1 */ 213 0x314A00FF, /* andi t2, 0x0ff */ 214 0x3C089000, /* dli t0, 0x900000003ff01000 */ 215 0x00084438, 216 0x35083FF0, 217 0x00084438, 218 0x35081000, 219 0x314B0003, /* andi t3, t2, 0x3 #local cpuid */ 220 0x000B5A00, /* sll t3, 8 */ 221 0x010B4025, /* or t0, t0, t3 */ 222 0x314C000C, /* andi t4, t2, 0xc #node id */ 223 0x000C62BC, /* dsll t4, 42 */ 224 0x010C4025, /* or t0, t0, t4 */ 225 /* WaitForInit: */ 226 0xDD020020, /* ld v0, FN_OFF(t0) #FN_OFF 0x020 */ 227 0x1040FFFE, /* beqz v0, WaitForInit */ 228 0x00000000, /* nop */ 229 0xDD1D0028, /* ld sp, SP_OFF(t0) #FN_OFF 0x028 */ 230 0xDD1C0030, /* ld gp, GP_OFF(t0) #FN_OFF 0x030 */ 231 0xDD050038, /* ld a1, A1_OFF(t0) #FN_OFF 0x038 */ 232 0x00400008, /* jr v0 #byebye */ 233 0x00000000, /* nop */ 234 0x1000FFFF, /* 1: b 1b */ 235 0x00000000, /* nop */ 236 237 /* Reset */ 238 0x3C0C9000, /* dli t0, 0x9000000010080010 */ 239 0x358C0000, 240 0x000C6438, 241 0x358C1008, 242 0x000C6438, 243 0x358C0010, 244 0x240D0000, /* li t1, 0x00 */ 245 0xA18D0000, /* sb t1, (t0) */ 246 0x1000FFFF, /* 1: b 1b */ 247 0x00000000, /* nop */ 248 249 /* Shutdown */ 250 0x3C0C9000, /* dli t0, 0x9000000010080010 */ 251 0x358C0000, 252 0x000C6438, 253 0x358C1008, 254 0x000C6438, 255 0x358C0010, 256 0x240D00FF, /* li t1, 0xff */ 257 0xA18D0000, /* sb t1, (t0) */ 258 0x1000FFFF, /* 1: b 1b */ 259 0x00000000, /* nop */ 260 /* Suspend */ 261 0x3C0C9000, /* dli t0, 0x9000000010080010 */ 262 0x358C0000, 263 0x000C6438, 264 0x358C1008, 265 0x000C6438, 266 0x358C0010, 267 0x240D0001, /* li t1, 0x01 */ 268 0xA18D0000, /* sb t1, (t0) */ 269 0x03e00008, /* jr ra */ 270 0x00000000 /* nop */ 271 }; 272 273 rom_add_blob_fixed("boot_rom", boot_code, sizeof(boot_code), 274 loader_rommap[LOADER_BOOTROM].base); 275 } 276 277 static void fw_cfg_boot_set(void *opaque, const char *boot_device, 278 Error **errp) 279 { 280 fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); 281 } 282 283 static void fw_conf_init(unsigned long ram_size) 284 { 285 static const uint8_t suspend[6] = {128, 0, 0, 129, 128, 128}; 286 FWCfgState *fw_cfg; 287 hwaddr cfg_addr = virt_memmap[VIRT_FW_CFG].base; 288 289 fw_cfg = fw_cfg_init_mem_wide(cfg_addr, cfg_addr + 8, 8, 0, NULL); 290 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)current_machine->smp.cpus); 291 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)current_machine->smp.max_cpus); 292 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); 293 fw_cfg_add_i32(fw_cfg, FW_CFG_MACHINE_VERSION, 1); 294 fw_cfg_add_i64(fw_cfg, FW_CFG_CPU_FREQ, get_cpu_freq_hz()); 295 296 fw_cfg_add_file(fw_cfg, "etc/system-states", 297 g_memdup2(suspend, sizeof(suspend)), sizeof(suspend)); 298 299 qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); 300 } 301 302 static int set_prom_cmdline(ram_addr_t initrd_offset, long initrd_size) 303 { 304 int ret = 0; 305 void *cmdline_buf; 306 hwaddr cmdline_vaddr; 307 unsigned int *parg_env; 308 309 /* Allocate cmdline_buf for command line. */ 310 cmdline_buf = g_malloc0(loader_memmap[LOADER_CMDLINE].size); 311 cmdline_vaddr = cpu_mips_phys_to_kseg0(NULL, 312 loader_memmap[LOADER_CMDLINE].base); 313 314 /* 315 * Layout of cmdline_buf looks like this: 316 * argv[0], argv[1], 0, env[0], env[1], ... env[i], 0, 317 * argv[0]'s data, argv[1]'s data, env[0]'data, ..., env[i]'s data, 0 318 */ 319 parg_env = (void *)cmdline_buf; 320 321 ret = (3 + 1) * 4; 322 *parg_env++ = cmdline_vaddr + ret; 323 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "g")); 324 325 /* argv1 */ 326 *parg_env++ = cmdline_vaddr + ret; 327 if (initrd_size > 0) 328 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, 329 "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s", 330 cpu_mips_phys_to_kseg0(NULL, initrd_offset), 331 initrd_size, loaderparams.kernel_cmdline)); 332 else 333 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "%s", 334 loaderparams.kernel_cmdline)); 335 336 /* argv2 */ 337 *parg_env++ = cmdline_vaddr + 4 * ret; 338 339 rom_add_blob_fixed("cmdline", cmdline_buf, 340 loader_memmap[LOADER_CMDLINE].size, 341 loader_memmap[LOADER_CMDLINE].base); 342 343 g_free(cmdline_buf); 344 345 loaderparams.a0 = 2; 346 loaderparams.a1 = cmdline_vaddr; 347 348 return 0; 349 } 350 351 static uint64_t load_kernel(CPUMIPSState *env) 352 { 353 long kernel_size; 354 ram_addr_t initrd_offset; 355 uint64_t kernel_entry, kernel_low, kernel_high, initrd_size; 356 357 kernel_size = load_elf(loaderparams.kernel_filename, NULL, 358 cpu_mips_kseg0_to_phys, NULL, 359 &kernel_entry, 360 &kernel_low, &kernel_high, 361 NULL, 0, EM_MIPS, 1, 0); 362 if (kernel_size < 0) { 363 error_report("could not load kernel '%s': %s", 364 loaderparams.kernel_filename, 365 load_elf_strerror(kernel_size)); 366 exit(1); 367 } 368 369 /* load initrd */ 370 initrd_size = 0; 371 initrd_offset = 0; 372 if (loaderparams.initrd_filename) { 373 initrd_size = get_image_size(loaderparams.initrd_filename); 374 if (initrd_size > 0) { 375 initrd_offset = MAX(loader_memmap[LOADER_INITRD].base, 376 ROUND_UP(kernel_high, INITRD_PAGE_SIZE)); 377 378 if (initrd_offset + initrd_size > loaderparams.ram_size) { 379 error_report("memory too small for initial ram disk '%s'", 380 loaderparams.initrd_filename); 381 exit(1); 382 } 383 384 initrd_size = load_image_targphys(loaderparams.initrd_filename, 385 initrd_offset, 386 loaderparams.ram_size - initrd_offset); 387 } 388 389 if (initrd_size == (target_ulong) -1) { 390 error_report("could not load initial ram disk '%s'", 391 loaderparams.initrd_filename); 392 exit(1); 393 } 394 } 395 396 /* Setup prom cmdline. */ 397 set_prom_cmdline(initrd_offset, initrd_size); 398 399 return kernel_entry; 400 } 401 402 static void main_cpu_reset(void *opaque) 403 { 404 MIPSCPU *cpu = opaque; 405 CPUMIPSState *env = &cpu->env; 406 407 cpu_reset(CPU(cpu)); 408 409 /* Loongson-3 reset stuff */ 410 if (loaderparams.kernel_filename) { 411 if (cpu == MIPS_CPU(first_cpu)) { 412 env->active_tc.gpr[4] = loaderparams.a0; 413 env->active_tc.gpr[5] = loaderparams.a1; 414 env->active_tc.gpr[6] = loaderparams.a2; 415 env->active_tc.PC = loaderparams.kernel_entry; 416 } 417 env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); 418 } 419 } 420 421 static inline void loongson3_virt_devices_init(MachineState *machine, 422 DeviceState *pic) 423 { 424 int i; 425 qemu_irq irq; 426 PCIBus *pci_bus; 427 DeviceState *dev; 428 MemoryRegion *mmio_reg, *ecam_reg; 429 MachineClass *mc = MACHINE_GET_CLASS(machine); 430 LoongsonMachineState *s = LOONGSON_MACHINE(machine); 431 432 dev = qdev_new(TYPE_GPEX_HOST); 433 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 434 pci_bus = PCI_HOST_BRIDGE(dev)->bus; 435 436 s->ecam_alias = g_new0(MemoryRegion, 1); 437 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 438 memory_region_init_alias(s->ecam_alias, OBJECT(dev), "pcie-ecam", 439 ecam_reg, 0, virt_memmap[VIRT_PCIE_ECAM].size); 440 memory_region_add_subregion(get_system_memory(), 441 virt_memmap[VIRT_PCIE_ECAM].base, 442 s->ecam_alias); 443 444 s->mmio_alias = g_new0(MemoryRegion, 1); 445 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 446 memory_region_init_alias(s->mmio_alias, OBJECT(dev), "pcie-mmio", 447 mmio_reg, virt_memmap[VIRT_PCIE_MMIO].base, 448 virt_memmap[VIRT_PCIE_MMIO].size); 449 memory_region_add_subregion(get_system_memory(), 450 virt_memmap[VIRT_PCIE_MMIO].base, 451 s->mmio_alias); 452 453 s->pio_alias = g_new0(MemoryRegion, 1); 454 memory_region_init_alias(s->pio_alias, OBJECT(dev), "pcie-pio", 455 get_system_io(), 0, 456 virt_memmap[VIRT_PCIE_PIO].size); 457 memory_region_add_subregion(get_system_memory(), 458 virt_memmap[VIRT_PCIE_PIO].base, s->pio_alias); 459 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, virt_memmap[VIRT_PCIE_PIO].base); 460 461 for (i = 0; i < GPEX_NUM_IRQS; i++) { 462 irq = qdev_get_gpio_in(pic, PCIE_IRQ_BASE + i); 463 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); 464 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ_BASE + i); 465 } 466 msi_nonbroken = true; 467 468 pci_vga_init(pci_bus); 469 470 if (defaults_enabled() && object_class_by_name("pci-ohci")) { 471 USBBus *usb_bus; 472 473 pci_create_simple(pci_bus, -1, "pci-ohci"); 474 usb_bus = USB_BUS(object_resolve_type_unambiguous(TYPE_USB_BUS, 475 &error_abort)); 476 usb_create_simple(usb_bus, "usb-kbd"); 477 usb_create_simple(usb_bus, "usb-tablet"); 478 } 479 480 pci_init_nic_devices(pci_bus, mc->default_nic); 481 } 482 483 static void mips_loongson3_virt_init(MachineState *machine) 484 { 485 int i; 486 long bios_size; 487 MIPSCPU *cpu; 488 Clock *cpuclk; 489 CPUMIPSState *env; 490 DeviceState *liointc; 491 DeviceState *ipi = NULL; 492 char *filename; 493 const char *kernel_cmdline = machine->kernel_cmdline; 494 const char *kernel_filename = machine->kernel_filename; 495 const char *initrd_filename = machine->initrd_filename; 496 ram_addr_t ram_size = machine->ram_size; 497 LoongsonMachineState *s = LOONGSON_MACHINE(machine); 498 MemoryRegion *address_space_mem = get_system_memory(); 499 MemoryRegion *ram = g_new(MemoryRegion, 1); 500 MemoryRegion *bios = g_new(MemoryRegion, 1); 501 MemoryRegion *iomem = g_new(MemoryRegion, 1); 502 MemoryRegion *iocsr = g_new(MemoryRegion, 1); 503 504 /* TODO: TCG will support all CPU types */ 505 if (!kvm_enabled()) { 506 if (!machine->cpu_type) { 507 machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A1000"); 508 } 509 if (!cpu_type_supports_isa(machine->cpu_type, INSN_LOONGSON3A)) { 510 error_report("Loongson-3/TCG needs a Loongson-3 series cpu"); 511 exit(1); 512 } 513 } else { 514 if (!machine->cpu_type) { 515 machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A4000"); 516 } 517 if (!strstr(machine->cpu_type, "Loongson-3A4000")) { 518 error_report("Loongson-3/KVM needs cpu type Loongson-3A4000"); 519 exit(1); 520 } 521 } 522 523 if (ram_size < 512 * MiB) { 524 error_report("Loongson-3 machine needs at least 512MB memory"); 525 exit(1); 526 } 527 528 /* 529 * The whole MMIO range among configure registers doesn't generate 530 * exception when accessing invalid memory. Create some unimplememted 531 * devices to emulate this feature. 532 */ 533 create_unimplemented_device("mmio fallback 0", 0x10000000, 256 * MiB); 534 create_unimplemented_device("mmio fallback 1", 0x30000000, 256 * MiB); 535 536 memory_region_init(iocsr, OBJECT(machine), "loongson3.iocsr", UINT32_MAX); 537 538 /* IPI controller is in kernel for KVM */ 539 if (!kvm_enabled()) { 540 ipi = qdev_new(TYPE_LOONGSON_IPI); 541 qdev_prop_set_uint32(ipi, "num-cpu", machine->smp.cpus); 542 sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); 543 memory_region_add_subregion(iocsr, SMP_IPI_MAILBOX, 544 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0)); 545 memory_region_add_subregion(iocsr, MAIL_SEND_ADDR, 546 sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1)); 547 } 548 549 liointc = qdev_new("loongson.liointc"); 550 sysbus_realize_and_unref(SYS_BUS_DEVICE(liointc), &error_fatal); 551 552 sysbus_mmio_map(SYS_BUS_DEVICE(liointc), 0, virt_memmap[VIRT_LIOINTC].base); 553 554 serial_mm_init(address_space_mem, virt_memmap[VIRT_UART].base, 0, 555 qdev_get_gpio_in(liointc, UART_IRQ), 115200, serial_hd(0), 556 DEVICE_NATIVE_ENDIAN); 557 558 sysbus_create_simple("goldfish_rtc", virt_memmap[VIRT_RTC].base, 559 qdev_get_gpio_in(liointc, RTC_IRQ)); 560 561 cpuclk = clock_new(OBJECT(machine), "cpu-refclk"); 562 clock_set_hz(cpuclk, DEF_LOONGSON3_FREQ); 563 564 for (i = 0; i < machine->smp.cpus; i++) { 565 int node = i / LOONGSON3_CORE_PER_NODE; 566 int core = i % LOONGSON3_CORE_PER_NODE; 567 int ip; 568 569 /* init CPUs */ 570 cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk, false); 571 572 /* Init internal devices */ 573 cpu_mips_irq_init_cpu(cpu); 574 cpu_mips_clock_init(cpu); 575 qemu_register_reset(main_cpu_reset, cpu); 576 577 if (!kvm_enabled()) { 578 hwaddr base = ((hwaddr)node << 44) + virt_memmap[VIRT_IPI].base; 579 base += core * 0x100; 580 qdev_connect_gpio_out(ipi, i, cpu->env.irq[6]); 581 sysbus_mmio_map(SYS_BUS_DEVICE(ipi), i + 2, base); 582 } 583 584 if (ase_lcsr_available(&MIPS_CPU(cpu)->env)) { 585 MemoryRegion *core_iocsr = g_new(MemoryRegion, 1); 586 g_autofree char *name = g_strdup_printf("core%d_iocsr", i); 587 memory_region_init_alias(core_iocsr, OBJECT(cpu), name, 588 iocsr, 0, UINT32_MAX); 589 memory_region_add_subregion(&MIPS_CPU(cpu)->env.iocsr.mr, 590 0, core_iocsr); 591 s->core_iocsr[i] = core_iocsr; 592 } 593 594 if (node > 0) { 595 continue; /* Only node-0 can be connected to LIOINTC */ 596 } 597 598 for (ip = 0; ip < 4 ; ip++) { 599 int pin = core * LOONGSON3_CORE_PER_NODE + ip; 600 sysbus_connect_irq(SYS_BUS_DEVICE(liointc), 601 pin, cpu->env.irq[ip + 2]); 602 } 603 } 604 env = &MIPS_CPU(first_cpu)->env; 605 606 /* Allocate RAM/BIOS, 0x00000000~0x10000000 is alias of 0x80000000~0x90000000 */ 607 memory_region_init_rom(bios, NULL, "loongson3.bios", 608 virt_memmap[VIRT_BIOS_ROM].size, &error_fatal); 609 memory_region_init_alias(ram, NULL, "loongson3.lowmem", 610 machine->ram, 0, virt_memmap[VIRT_LOWMEM].size); 611 memory_region_init_io(iomem, NULL, &loongson3_pm_ops, 612 NULL, "loongson3_pm", virt_memmap[VIRT_PM].size); 613 qemu_register_wakeup_support(); 614 615 memory_region_add_subregion(address_space_mem, 616 virt_memmap[VIRT_LOWMEM].base, ram); 617 memory_region_add_subregion(address_space_mem, 618 virt_memmap[VIRT_BIOS_ROM].base, bios); 619 memory_region_add_subregion(address_space_mem, 620 virt_memmap[VIRT_HIGHMEM].base, machine->ram); 621 memory_region_add_subregion(address_space_mem, 622 virt_memmap[VIRT_PM].base, iomem); 623 624 /* 625 * We do not support flash operation, just loading bios.bin as raw BIOS. 626 * Please use -L to set the BIOS path and -bios to set bios name. 627 */ 628 629 if (kernel_filename) { 630 loaderparams.cpu_freq = get_cpu_freq_hz(); 631 loaderparams.ram_size = ram_size; 632 loaderparams.kernel_filename = kernel_filename; 633 loaderparams.kernel_cmdline = kernel_cmdline; 634 loaderparams.initrd_filename = initrd_filename; 635 loaderparams.kernel_entry = load_kernel(env); 636 637 init_boot_rom(); 638 init_boot_param(); 639 } else { 640 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, 641 machine->firmware ?: LOONGSON3_BIOSNAME); 642 if (filename) { 643 bios_size = load_image_targphys(filename, 644 virt_memmap[VIRT_BIOS_ROM].base, 645 virt_memmap[VIRT_BIOS_ROM].size); 646 g_free(filename); 647 } else { 648 bios_size = -1; 649 } 650 651 if ((bios_size < 0 || bios_size > virt_memmap[VIRT_BIOS_ROM].size) && 652 !kernel_filename && !qtest_enabled()) { 653 error_report("Could not load MIPS bios '%s'", machine->firmware); 654 exit(1); 655 } 656 657 fw_conf_init(ram_size); 658 } 659 660 loongson3_virt_devices_init(machine, liointc); 661 } 662 663 static void loongson3v_machine_class_init(ObjectClass *oc, void *data) 664 { 665 MachineClass *mc = MACHINE_CLASS(oc); 666 667 mc->desc = "Loongson-3 Virtualization Platform"; 668 mc->init = mips_loongson3_virt_init; 669 mc->block_default_type = IF_IDE; 670 mc->max_cpus = LOONGSON_MAX_VCPUS; 671 mc->default_ram_id = "loongson3.highram"; 672 mc->default_ram_size = 1600 * MiB; 673 mc->minimum_page_bits = 14; 674 mc->default_nic = "virtio-net-pci"; 675 } 676 677 static const TypeInfo loongson3_machine_types[] = { 678 { 679 .name = TYPE_LOONGSON_MACHINE, 680 .parent = TYPE_MACHINE, 681 .instance_size = sizeof(LoongsonMachineState), 682 .class_init = loongson3v_machine_class_init, 683 } 684 }; 685 686 DEFINE_TYPES(loongson3_machine_types) 687