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